From a square sheet of side 8 cm , a piece of a paper width 2 cm is removed along the border. Then find the area of the removed piece of paper.

The radius of a circular card board is 20 cm. A strip of width 4 cm is removed all along its border. The percenrage of the area of the strip removed is _______.

From a rectangular sheet of a cm xx bcm , four equal square pieces of side x cm are removed at the corners and the sides are then turned up so as to form an open rectangular box. Find the value of x so that the volume of the box is greatest.

From a circular sheet of radius 4 cm, a circle of radius 3 cm is removed. Find the area of the remaining sheet. (Takepi = 3.14)

A square sheet of paper has a perimeter of 40cm. what is the length of its sides?Also find the area of the square sheet?

From a circular aluminium sheet of radius 14 cm, a sector of angle 45^(@) is removed. Find the percentage of the area of the sector removed.

From a circular sheet of radius 4cm, a circle of radius 3cm is removed. Find the area of the remaining sheet. (Take pi=3.14 )