Question

3) Find the perimeter of the following semicircles which includes its diameter, 7cm (Use T =) a) radius=7m b) diameter = 42 em c) radius = 17,5 cm​

Answer 1

Answer:

36

Step-by-step explanation:

Perimeter of a semicircle = 2×Pi×r/2+2×r

= Pi×r+2×r

= 22/7×7+2×7

= 22+14

= 36 cm

Answer 2

Answer:

n

$perimeter \: of \: semicircle \\ \\ \pi \: r + 2r \\ = \pi \frac{d}{2 \: } + d \\ = \frac{22}{7} \times \frac{7}{2} + 7 \\ = 11 + 7 \\ = 18cm \\ mark \: as \: brainliest$