Question

7. Find the perimeter of the adjoining figure, which is a semicircle including
its diameter.​

Answer 1

Answer:

Solution 7:

Diameter= 10cm

r=\frac{10}{2}cm=5cmr=

2

10

cm=5cm

Perimeter of a semicircle= \pi rπr

=\frac{110}{7}cm+diameter=

7

110

cm+diameter

\frac{110}{7}cm+10cm

7

110

cm+10cm

\left(\frac{110+70}{7}\right)cm(

7

110+70

)cm

\frac{180}{7}cm=25.71cm

7

180

cm=25.71cm

Hence the required perometer =25.7cm (approx.)

~ Nikita Budhwani