1) If the circumference of a circle increases from 4pi to 8 pi, what change occurs in the area
2) The area of incircle of an equilateral triangle of side 42 cm i
3) A farmer wishes to start a 100 sq. m. rectangular vegetable garden. Since he has only 30 meter barbed wire, he fences three sides of the garden letting his house compound wall act as the fourth side fencing. Then find the dimension of the garde
4) A courtyard is 25 meter long and 16 meter board is to be paved with bricks of dimensions 20 cm by 10 cm. The total number of bricks required is
5) The length of a rectangle is three times of its width. If the length of the diagonal is \begin{aligned}8\sqrt{10}\end{aligned}, then find the perimeter of the rectang
6) A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area i
7) 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 mete
8) The perimeters of 5 squares are 24 cm, 32 cm, 40 cm, 76 cm and 80 cm respectively. The perimeter of another square equal in area to the sum of the area of these square i
9) 50 square stone slabs of equal size were needed to cover a floor area of 72 sq.m. Find the length of each stone sl
10) What are the least number of square tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broa
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