Question

perimeter of semi circle and rectangle


please solve these problem

pls explain
pls help me​

Answer 1

Circumference = pi ×r

Circumference = 132

Perimeter of Rectangle = 42 × 2 + 18 × 2

Perimeter = 120

Total Perimeter = 120 + 132 = 252 cm

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Answer 2

Answer:

i don't know perimeter of circle

Step-by-step explanation:

PERIMETER OF RECTANGLE = 2(L+B)

SO, PERIMETER OF RECTANGLE = 2(18+42)cm

= 2×60cm

= 160 cm