Question

Find the area of the shaded part of a envelope in each of the figure where ABCD is a rectangle​

Answer 1

Step-by-step explanation:

R.E.F. Image.

Area of shaded region

= Area of rectangle AEFD - [Area of rectangle ABCD + arc(BEF)]

=(10×2)m

2

−[8×2+

2

1

×2×2]m

2

=20m

2

−[16+2]m

2

=20m

2

−18m

2

=2m

2