Question
Find the perimeter of the given shape (Fig) (Take $\pi = \frac{22}{7})$
✓
Answer
In order to find the perimeter of the given shape, we need to find the circumference of semi-circles on each side of the square.
The outer boundary, of this figure is made up of four semi-circles. Diameter of each semicircle is $14\ cm.$
We know that:
Circumference of the circle $= \pi d$
Circumference of one semi-circle $=\frac{1}{2} \pi d$
$=\frac{1}{2} \times \frac{22}{7} \times 14\ cm = 22\ cm$
Circumference of each of the semi-circles is $22\ cm$
Therefore, perimeter of the given figure $= 4 \times 22\ cm = 88\ cm$
The outer boundary, of this figure is made up of four semi-circles. Diameter of each semicircle is $14\ cm.$
We know that:
Circumference of the circle $= \pi d$
Circumference of one semi-circle $=\frac{1}{2} \pi d$
$=\frac{1}{2} \times \frac{22}{7} \times 14\ cm = 22\ cm$
Circumference of each of the semi-circles is $22\ cm$
Therefore, perimeter of the given figure $= 4 \times 22\ cm = 88\ cm$
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