ABCD is a rectangle of length 20cm and breadth 10cm. OAPB is a sector of a circle of radius `10sqrt2`cm. calculate the area of the shaded region. [Take `pie`= 3.14] `

AOBC is a quadrant of a circle of radius 10 cm. Calculate the area of the shaded portion. (Use pi = 3.14 )

AOBC is a quadrant of a circle of radius 10 cm. Calculate the area of the shaded portion. (Use pi = 3.14 )

Find the area of a book of length 20 cm and breadth 10 cm

A sector of a circle with radius 10 cm has central angle 72^@ . Find the area of the sector (pi= 3.14)

In the given figure,ABCD is a rectangle of 20cm xx10cm. A semicircle is drawn with centre O,radius 10sqrt(2)cm and it passes through A and B.Find the area of the shaded region. [Use pi=(22)/(7)]

If the sector of a circle with radius 10 cm has central angle 72^(@) , find the area of the sector. (pi = 3.14)

If the sector of a circle with radius 10 cm has central angle 18^(@) , find the area of the sector. (pi = 3. 14)

If the sector of a circle with radius 10 cm has central angle 18^(@) , find the area of the sector. (pi = 3. 14)

If the length of an arc of sector of a circle is 20 cm and if its radius is 7 cm, find the area of the sector.

In given figure sectors of two concentric circles of radius 7 cm and 3.5 cm are shown. Find the area of the shaded region.