Question

The perimeter of the following figure is. Single choice.

(1 Point)



27 27 cm

28 28 cm

36 36 cm

15 15 cm​

Answer 1

Answer:

36 cm

Step-by-step explanation:

Perimeter or circumference of circle is 2.pi.r

Circumference means curved part. So circumference of semicircle is pi.r. and perimeter of given semicircle is( pi. r)+d

22/7.*7+14 =36

Answer 2

The perimeter of the following figure is option (3) - 36 cm.

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Let's understand a few concepts:

To calculate the perimeter or circumference of the semi-circle (given in the figure), we will use the following formula:

Circumference of the semicircle is,

= Length of the circular part + Length of the diameter

= $\frac{1}{2} \times Circumference + 2r$

= $\frac{1}{2} \times 2\pi r + 2r$

= $\boxed{\bold{\pi r + 2r}}$

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Let's solve the given problem:

The radius of the given figure (r) = 7 cm

Therefore,

The perimeter of the given figure is,

= Circumference of the semicircle

= $\pi r + 2r$

= $(\frac{22}{7} \times 7) + (2\times 7)$

= $22 + 14$

= $\bold{36\:cm}$

Thus, the perimeter of the following figure is 36 cm.

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