If the radius of earth becomes half of it's present radius how many times decrease in a day.

If earth be at half of its present distance from the sun, how many days will there be in a year?

If the radius of a circle is doubled,by how many times will its area be increased?.

If the earth suddenly contracts to one third of its present radius, how much would the day be shortened ?

A radio station plays 'Assam Sangeet' once every two days. Another radio station plays the same song once every three days. How many times in 30 days will both the radio stations play the same song on the same day.

If each edge of a cube is doubled, how many times will its volume increase?

A cylindrical container is filled with ice-cream whose radius is 6 cm and height 15 cm. The whole ice-cream is distributed among ten children equally in form of cones having hemispherical tops. If the height of the conical portion is four times the radius of the base, find the radius of the base of the cone.

If the radius of earth strinks by one percent it mass remaining the same by what percent will the acceleration due to gravity change at surface.

When the earth shrinks to half of its radius, without reducing its mass, what change will be there in the duration of a day?

What is the length of the radius of the earth?