Find the volume and surface area of a sphere of diameter 42cm.
Radius=21
Volume=4/3(∏r³)=4/3*(22/7*21*21*21)=38808
Surface Area=4=4*(22/7*21*21)=5544
The difference between the circumference and radius of a circle is 74cm.Find area of the circle.
A circle and a rectangle have the same perimeter.The sides of the rectangle are 40cm and 26cm.What is the area of the circle?
The length of a rectangle is twice the diameter circle.The circumference of the circle is equal to area of a square of side 22cm.What is the breadth of rectangle if its perimeter is 668cm?
The number of revolutions of wheel of diameter 70cm makes in travelling a distance of 990m is
The circumference of two circles is 88m and 220m respectively.What is the difference between the area of larger circle and smaller circle?