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Mathematics Mcqs

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

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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

Explanation:
262 – 102 = 242
d1 = 20 d2 = 48
1/2 * 20 * 48 = 480

The side of a rhombus is 26 m and length of one of its diagonals is 20 m. The area of the rhombus is_______? Read More »

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

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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%

Explanation:
100 * 100 = 10000
110 * 125 = 13750
———–
3750
10000 —— 3750
100 ——- ? => 37.5%

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

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

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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
Explanation:
100 * 100 = 10000
125 * 80 = 10000
No change

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

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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?

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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

Explanation:
Area = (l + b – d) d
(80 + 60 – 10)10 => 1300 m2
1300 * 3 = Rs.3900

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? Read More »

Areas, Mathematics Mcqs

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?

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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

Area = (l + b +2d) 2d
= (75 + 55 +2.5 * 2) 2*2.5 => 675
675 * 2 = Rs.1350

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? Read More »

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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?

Areas, Mathematics Mcqs /
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

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

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? Read More »

Areas, Mathematics Mcqs