The perimeter of a square is 48cm. The area of rectangle is 4cm2 less than the area of the square. If length of the rectangle is 14cm, then its perimeter is
Answer: B
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The ratio of the radius of two circles is 1: 3, and then the ratio of their areas is?
Answer: C
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What is the area of a square field whose diagonal of length 20 m?
Answer: C
d⊃2;/2 = (20 * 20)/2 = 200
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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 m⊃2; and the short side is 30 m long. How much would the job cost?
Answer: B
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The radius of a semi circle is 6.3 cm then its perimeter is?
Answer: B
36/7 r = 6.3 = 32.4
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Find the area of the quadrilateral of one of its diagonals is 20 cm and its off sets 9 cm and 6 cm?
Answer: B
1/2 * 20(9 + 6) = 150 cm⊃2;
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A rhombus has one of its diagonal 60% of the other. A square is drawn using the longer diagonal as side. What will be ratio of area of square to that of the rhombus?
Answer: C
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A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area is ?
Answer: B
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The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is
Answer: D
Perimeter = Distance travelled in 8 minutes,
=> Perimeter = 12000/60 * 8 = 1600 meter. [because Distance = Speed * Time]
As per question length is 3x and width is 2x
We know perimeter of rectangle is 2(L+B)
So, 2(3x+2x) = 1600
=> x = 160
So Length = 160*3 = 480 meter
and Width = 160*2 = 320 meter
Finally, Area = length * breadth
=480*320
=153600
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The altitude of an equilateral triangle of side 2√3 cm is?
Answer: D
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