Areas Mcqs - Set 4

1)   Find the area of circle whose radius is 7m?

a. 124 sq m
b. 154 sq m
c. 145 sq m
d. 167 sq m
Answer  Explanation 

ANSWER: 154 sq m

Explanation:
22/7 * 7 * 7 = 154


2)   Find the area of the quadrilateral of one of its diagonals is 20 cm and its off sets 9 cm and 6 cm?

a. 120 sq m
b. 150 sq m
c. 110 sq m
d. 300 sq m
Answer  Explanation 

ANSWER: 150 sq m

Explanation:
No explanation is available for this question!


3)   The radius of a circle is increased by 1%. Find how much % does its area increases?

a. 1.01%
b. 5.01%
c. 3.01%
d. 2.01%
Answer  Explanation 

ANSWER: 2.01%

Explanation:
No explanation is available for this question!


4)   The cross-section of a cannel is a trapezium in shape. If the cannel is 10 m wide at the top and 6 m wide at the bottom and the area of cross-section is 640 sq m, the depth of cannel is_________?

a. 20 m
b. 60 m
c. 40 m
d. 80 m
Answer  Explanation 

ANSWER: 80 m

Explanation:
No explanation is available for this question!


5)   The side of a square is increased by 25% then how much % does its area increases?

a. 52.65
b. 56.25
c. 50.75
d. 42.75
Answer  Explanation 

ANSWER: 56.25

Explanation:
No explanation is available for this question!


6)   The area of a parallelogram is 128sq m and its altitude is twice the corresponding base. Then the length of the base is_________?

a. 8 m
b. 10 m
c. 6 m
d. 12 m
Answer  Explanation 

ANSWER: 8 m

Explanation:
No explanation is available for this question!


7)   The perimeter of a rhombus is 68 cm and one of its diagonals is 16 cm. Find its area?

a. 260 cm2
b. 240 cm2
c. 280 cm2
d. 220 cm2
Answer  Explanation 

ANSWER: 240 cm2

Explanation:
No explanation is available for this question!


8)   The diagonals of a rhombus are 15 cm and 20 cm. Find its area?

a. 120 sq m
b. 300 sq m
c. 150 sq m
d. 480 sq m
Answer  Explanation 

ANSWER: 150 sq m

Explanation:
1/2 * 15 * 20 = 150


9)   The side of a rhombus is 26 m and length of one of its diagonals is 20 m. The area of the rhombus is_______?

a. 529 sq m
b. 240 sq m
c. 260 sq m
d. 480 sq m
Answer  Explanation 

ANSWER: 480 sq m

Explanation:
No explanation is available for this question!


10)   The length and breadth of a rectangle is increased by 10% and 25% respectively. What is the increase in the area?

a. 27.5%
b. 37.5%
c. 47.5%
d. 57.5%
Answer  Explanation 

ANSWER: 37.5%

Explanation:
100 * 100 = 10000

110 * 125 = 13750

———–

3750

10000 —— 3750

100 ——- ? => 37.5%


11)   The length of a rectangle is increased by 25% and its breadth is decreased by 20%. What is the effect on its area?

a. Remains same
b. 5% decrease
c. 5% increase
d. 10% increase
Answer  Explanation 

ANSWER: Remains same

Explanation:
100 * 100 = 10000

125 * 80 = 10000

No change


12)   A rectangular lawn of dimensions 80 m * 60 m has two roads each 10 m wide running in the middle of the lawn, one parallel to the length and the other parallel to the breadth. What is the cost of traveling the two roads at Rs.3 per sq m?

a. Rs.3600
b. Rs.3700
c. Rs.3800
d. Rs.3900
Answer  Explanation 

ANSWER: Rs.3900

Explanation:
Area = (l + b – d) d

(80 + 60 – 10)10 => 1300 m2

1300 * 3 = Rs.3900


13)   A rectangular grass field is 75 m * 55 m, it has a path of 2.5 m wide all round it on the outside. Find the area of the path and the cost of constructing it at Rs.2 per sq m?

a. 675, Rs.1350
b. 575, Rs.1350
c. 1350, Rs.675
d. None
Answer  Explanation 

ANSWER: 675, Rs.1350

Explanation:
Area = (l + b +2d) 2d

= (75 + 55 +2.5 * 2) 2*2.5 => 675

675 * 2 = Rs.1350


14)   The length of rectangle is thrice its breadth and its perimeter is 96 m, find the area of the rectangle?

a. 432 sq m
b. 356 sq m
c. 452 sq m
d. 428 sq m
Answer  Explanation 

ANSWER: 432 sq m

Explanation:
2(3x + x) = 96

l = 36 b = 12

lb = 36 * 12 = 432


15)   The area of a square field 3136 sq m, if the length of cost of drawing barbed wire 3 m around the field at the rate of Rs.1.50 per meter. Two gates of 1 m width each are to be left for entrance. What is the total cost?

a. Rs.1014
b. Rs.1140
c. Rs.999
d. Rs.1085
Answer  Explanation 

ANSWER: Rs.999

Explanation:
a2 = 3136 => a = 56
56 * 4 * 3 = 672 – 6 = 666 * 1.5 = 999


16)   A rectangular farm has to be fenced one long side, one short side and the diagonal. If the cost of fencing is Rs.10 per meter. The area of farm is 1200 m2 and the short side is 30 m long. How much would the job cost?

a. Rs.700
b. Rs.1200
c. Rs.1400
d. Rs.1500
Answer  Explanation 

ANSWER: Rs.1200

Explanation:
No explanation is available for this question!


17)   The length of the rectangular field is double its width. Inside the field there is square shaped pond 8m long. If the area of the pond is 1/8 of the area of the field. What is the length of the field?

a. 31 m
b. 32 m
c. 16 m
d. 20 m
Answer  Explanation 

ANSWER: 32 m

Explanation:
No explanation is available for this question!


18)   Find the number of square tiles to cover the floor of a room measuring 4 m * 9 m leaving 0.25 m space around the room. A side of square tile is given to be 25 cms?

a. 425
b. 476
c. 450
d. 350
Answer  Explanation 

ANSWER: 476

Explanation:
No explanation is available for this question!


19)   How many paying stones, each measuring 2 1/2 m * 2 m are required to pave a rectangular court yard 30 m long and 16 1/2 m board?

a. 99
b. 90
c. 95
d. 100
Answer  Explanation 

ANSWER: 99

Explanation:
No explanation is available for this question!


20)   Sides of a rectangular park are in the ratio 3: 2 and its area is 3750 sq m, the cost of fencing it at 50 ps per meter is_______?

a. Rs.150
b. Rs.100
c. Rs.125
d. Rs.175
Answer  Explanation 

ANSWER: Rs.125

Explanation:
No explanation is available for this question!