The total surface area of a hemisphere is 166.23 sq cm, find its radius?

If the volume of two cubes are in the ratio of 343: 512, then what is the ratio of their total surface area?

The perimeter of rectangle of length 2 (x + 3) cm and breadth 2 (x + 1) cm is double the perimeter of a square of area 225 cm². Find the area of rectangle.

If the radius and height of a cylinder increase by 20% and15% respectively. Then what is the % change in curved surface area? 

The area of a circle, is 3850 sq.m. What will be its circumference?

The base of an isosceles triangle is 6 cm and its perimeter is 16 cm. Its area is 

The length, width and height of a room are 10 meters, 8 meters and 6 meters respectively. What will be the largest bamboo length that can be kept in this room?

The radius of a circular field is equal to the side of a square field whose perimeter is 784 feet. What is the area o the circular field?