Question

find the perimeter of a semi circle whose diameter is 10 cm

Answer 1

Answer:

Perimeter of the semicircle = 25.70 cm

Explanation:

Given diameter of a circle (d)=10cm

Perimeter of a semicircle =

$\frac{perimeter\: of \:a\: circle}{2}+diameter$

=$\frac{\pi \times d }{2}+d$

=$\frac{\pi \times 10}{2}+10$

/* d = 10cm given */

= $5\pi +10$

= $5 \times 3.14 + 10$

/* if π = 3.14 */

= $15.70+10$

= $25.70cm$

Therefore,

Perimeter of the semicircle = 25.70 cm

•••

Answer 2

Answer:

Perimeter of the semicircle = 25.70 cm

Explanation:

Given diameter of a circle (d)=10cm

Perimeter of a semicircle =

=

=

/* d = 10cm given */

=

=

/* if π = 3.14 */

=

=

Therefore,

Perimeter of the semicircle = 25.70 cm

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