Find the perimeter of a rectangle whose length and breadth are 45m and 70m respectively?
Perimeter=2(length+breadth)
2(45+70)=2*115=230
The radii of two spheres are in the ratio of 1:2.What is the ratio of two surface areas?
The total surface area of a hemisphere of diameter 14cm is
If the volume of a sphere is divided by its surface area,the result is 27cm.Radius of the sphere is
The volumes of two spheres are in the ratio 64:27.The ratio of their surface area is
The surface area of a sphere is 2464.If its radius be doubled, surface area of new sphere is
