Question

please give me full solution

Answer 1

perimeter=21+21+14-(7+7)+2πr/2
42+πr
42+22×7/7
64
hope this helps you

Answer 2

Perimeter of shaded region = (perimeter of rectangle) - ( length of side 14 cm ) + ( circumference of circle with radius 14 cm/2)

➡ 2 ( l+ b ) - 14 + πr

➡ 2 ( 21 + 14 ) - 14 + (22/7) *7

➡ 2 ( 35 ) -14 + 22

➡ 70 - 14 +22

➡ 78 cm

So, the required answer is 78cm

Hope it will help you !!!