Question

The radius of a semicircular garden is 35 m. One has to walk how many metres to make one complete round of that garden?

Answer 1

Answer:

The correct answer is $180 \; m$.

Step-by-step explanation:

As the garden is in a semicircular shape, therefore,

Radius of garden $= 35 \; m$

As we know that,  

Circumference of semicircle $= \pi r$

Whereas, $r$ is the radius

Therefore,

Distance to walk all around the ground $\left( d \right)$-

$d = \pi r + 2r$

$d = \frac{22}{7} \times 35 + 2 \times 35$

$d = 110 + 70 = 180$

Hence one has to walk $180 \; m$ to walk all around the garden once.