The base of a right triangle is 8 and hypotenuse is 10. Its area is?
Answer: D
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What is the area of square field whose side of length 15 m?
Answer: A
15 * 15 = 225 sq m
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A rectangular plot measuring 90 metres is to be encloseed by wire fencing. If the poles of the fence are kept 5 metres apart, how many poles will be needed?
Answer: B
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The side of a square is increased by 25% then how much % does its area increases?
Answer: B
a = 100 a⊃2; = 10000
a = 125 a⊃2; = 15625
----------------
10000 --------- 5625
100 -------? => 56.25 %
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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?
Answer: B
3 1/2 * 8 1/2 = 1/4 * 1/4 * x => x = 476
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If the area of circle is 616 sq cm then its circumference?
Answer: B
22/7 r⊃2; = 616 => r = 14
2 * 22/7 * 14 = 88
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What will be the cost of gardening 1 meter boundary around a rectangular plot having perimeter of 340 meters at the rate of Rs. 10 per square meter ?
Answer: D
We know Perimeter = 2(l+b), right
So,
2(l+b) = 340
As we have to make 1 meter boundary around this, so
Area of boundary = ((l+2)+(b+2)-lb)
= 2(l+b)+4 = 340+4 = 344
So required cost will be = 344 * 10 = 3440
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Original breadth of a rectangular box is 20 cm. The box was then remade in such a way that its length got increased by 30% but the breadth decreased by 20%. This led to an increase in area by 100sq.cm. What is the new area of the box?
Answer: C
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A rectangular margin has a length of 48cm and a total area of 840 sq.cm. The area becomes 2(6/7) times the initial area by just increasing the breadth. How much is the perimeter of the
Answer: C
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The length of rectangle is thrice its breadth and its perimeter is 96 m, find the area of the rectangle?
Answer: A
2(3x + x) = 96
l = 36 b = 12
lb = 36 * 12 = 432
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