Question

A primary school has a running track.

Answer 1

Answer:

Distance around the track = 194.3 metres.

Step-by-step explanation:

Given: The two straight sides are of the track are 50 metres each

          Diameter of each bend = 30 metres

Thus;

radius of the bends = $\frac{diameter}{2}$

                                  = $\frac{30}{2}$

                                  = 15 metres

So that,

length of the semicircular bend = $\frac{1}{2}$ x 2$\pi$r

                                   = $\pi$r = $\frac{22}{7}$ x 15

                                   = 47.143

length of each semicircular bend is 47.14 metres.

Distance around the track = addition of the length of each straight sides + addition of the length of the bends

                                 = 50 + 50 + 47.14 + 47.14

                                 = 194.28

Therefore,

Distance around the track = 194.3 metres.