Question

a semicircular window has a diameter of 56 CM its perimeter is​

Answer 1

d=2r. 56/2=28. we know that perimeter of circle =2πr=2×28×22/7=176cm. window is semi circular 176/2=88cm

Answer 2

$\huge \bold \red{heya}$

Given:

Diameter=56 cm

Radius=56/2=28 cm

We know that

Perimeter of a circle=2πr

So, perimeter of a semicircle=1/2×2πr

▶1/2(2πr)

▶1/2×2×22/7×28

▶88 cm