21 aIn the given figure, ABCD is a rectangle of dimensions 21 em * 14

1.	21 aIn the given figure, ABCD is a rectangle of dimensions 21 em * 14 m. Asemicircle ,ส drawn with BC aa diameter Find the area and theperimeter of the shaded region in the figure
Answer» Area of shaded region = Area of rectangle - Area of semi-circle =(21 × 14) – ½ × π × 7 × 7 = 294 – 77 = 217 cm2 Perimeter of shaded region = 21 + 14 + 21 + π × 7 = 56 + 22 = 78 cm Like my answer if you find it useful!

21 aIn the given figure, ABCD is a rectangle of dimensions 21 em * 14 m. Asemicircle ,ส drawn with BC aa diameter Find the area and theperimeter of the shaded region in the figure

Answer»

Area of shaded region = Area of rectangle - Area of semi-circle

=(21 × 14) – ½ × π × 7 × 7

= 294 – 77

= 217 cm2

Perimeter of shaded region = 21 + 14 + 21 + π × 7

= 56 + 22

= 78 cm

Like my answer if you find it useful!