Question

How to solve the above sum

Answer 1

Answer:

find the area of Trapiezium - area of semi circle

(1/2(20) (10+30)) -(( 22/7) (10) (10) (1/2)

400-1100/7

400-157.14

= 242.86

Answer 2

Answer

243cm^2

Step-by-step explanation:

area of trapezium=a+b/2×h

=10+30/2×20

=400cm^2

area of semi-circle=πr^2/2

=3.14×10×10÷2

=157cm^2

area of shaded region=400-157

=243cm^2