Question

find the perimeter of each of the following shapes​

Answer 1

the perimeter of rectangle is 2(l ➕b)

l=40m

b=15m

2x40 ➕ 15

2x55

110m

the perimeter of circle is 2πr

2x3.14xr

r=diameter÷2

r= 40÷2

r = 20

2x3.14x20

125.6m

we want the valu of perimeter for half of the circle

so 125.6÷2

62.8m

the perimeter of whole picture

perimeter of rectangle➕ perimeter of half of the circle

110➕62.8

=172.8