Question

find the circumference s of a circle with radius 15.4 and the perimeter of two semicircles with same radius

Answer 1

Here is your solutions

Given :-

A circle with radius 15.4 cm

To find the circumference of a circle :-

Circumference of circle = 2 × π × r
=>2 × 22/7 × 154/10
=>(2×22×154)/7×10
=>96.8cm

Hence

Circumference of circle = 96.8cm

Now

perimeter of two semicircle = 2 × perimeter of semi circle

=>2×perimeter of semi circle
=>2× (π ×r)
=>2×22/7×154/10
=>96.8cm

Hence

Circumference of two semicircle = 96.8cm

Note:- perimeter and Circumference both are same

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