One side of the rectangular ground is 8m and its diagonal is 17m. Find the area of the ground?

A circular park whose diameter is 210 m has a 5 m wide path running around it(on the outside). What is the area ( in m²) of the path?

A cylindrical well of depth 21 m with internal radius of 13 m is dug up. The mud, so detained, is spread evenly to form a platform of dimension 52 × 13.2. What is the height of the platform?

The ratio of the volume of right circular cylinder and a right circular cone of the same base and height will be:

A polygon has 9 sides, what is its interior angle?

A solid sphere of diameter 17.5 cm is cut into two equal halves. What will be the increase (in cm²) in the total surface area?

The lengths of the parallel sides of a trapezium are 51 cm and 21 cm, and that of each of the other two sides is 39 cm. what is the area ( in cm²) of the trapezium?

The area  of a circle is 616 sq cm, find its circumference?