Question

find the perimeter of each figure.please give me a answer.use in 2π r​

Answer 1

Answer:

1) 1/4×2π×21

( 1/2)×π×21

10.5×π m

2]3/4×2π×0.7

3/2×π×0.7

( 2.1/2)×π m

3] (1/2×π×10.5/2)+(7+7)

[(5.25/2)×π]+[14] m