Find the area of a quadrant of a circle whose circumference is 22 cm.

In the fig. fourth quadrant of a circle is OACB where O is the centre of the circle and radius of the circle is 3.5 cm. Find the area of fourth quadrant of the circle.and find the area of shaded portion of the part ADBC if OD=2cm (pi=22/7)

Find the areas of the squares whose sides are: 10 cm

Find the areas of the squares whose sides are: 14 cm

Find the surface area of a cube whose edge is 12 cm.

Find the area of an equilateral triangle whose each side is 4 cm.

Find the area of circle whose radius is 25 m

What is the radius of a circle that has a circumference of 22/7 meters?