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# Area

1.

If the wheel is 14 cm then the number of revolutions to cover a distance of 1056 cm is?

2 * 22/7 * 14 * x = 1056 => x = 12

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2.

The Diagonals of two squares are in the ratio of 2:5. find the ratio of their areas.

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3.

The side and one of the diagonals of a rhombus are 13cm and 24cm respectively. The area of the rhombus (in sq.cm.) is

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4.

The length of a rectangular polt is 20 metres more than its breadth. If the cost fencing the plot Rs.26.50 per metre Rs.5300, what is the length of the plot in metres?

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5.

The ratio of the area of a square to that of the square drawn on its diagonal is?

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6.

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

100 * 100 = 10000

125 * 80 = 10000

No change

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7.

Area of a Rectangular park is 2400 sq.meter. If length of the park decreases 5 meters the area decreases 20 sq.meters. Perimeter of the park is-

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8.

The perimeter of a semi circle is 144 cm then the radius is?

36/7 r = 144 => r = 28

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9.

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

r = 100   r = 101

r⊃2; = 10000    r⊃2; = 10201

10000 ---- 201

100 ---- ? => 2.01%

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10.

How many minimum number of square tiles are needed to cover a rectangular floor of dimension 5.25m and 5.10m completely?