The circumferences of two circle are 132 metres and 176 metres respectively. What is the difference between the area of the larger circle and the smaller circle ?

The ratio of the radii of two circles is 1 : 3. Then the ratio of their areas is :

The circumference of a circular ground is 88 metres. A strip of land, 3 metres wide, inside and along the circumference of the ground is to be levelled. What is the budgeted expenditure if the levelling costs Rs. 7 per square metre ?

If the circumference of a circle is 100 units, then what will be the length of the arc described by an angle of 20 degrees ?

If in a triangle, the area is numerically equal to the perimeter, then the radius of the inscribed circle of the triangle is :

Two equal circle are drawn in square in such a way that a side of the square forms diameter of each circle. If the remaining area of the square is 42 cm2, how much will the diameter of the circle measure ?

The base of triangle is 15 cm and height is 12 cm the height of another triangle of double the area having base 20 cm is :

The difference between the length and breadth of a rectangle is 23 m. If its perimeter is 206 m, then its area is :

The length of a rectangle is three times of its width. If the length of the diagonal is $$8\sqrt {10} $$ cm, then the perimeter of the rectangle is :

A typist uses a paper 30 cm by 15 cm. He leaves a margin of 2.5 cm at the top and bottom and 1.25 cm on either side. What percentage of paper area is approximately available for typing ?

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