Question

112 m
Fig. 15.6 shows the innermost lane of a running
track. At each end of the rectangle is a semicircle.
How much distance would Kanika cover in
running once round the track?
56 m
Fig. 15.6​

Answer 1

Answer:

Perimeter of the track = perimeter of one circle of radius 28 cm + 2 x (length of rectangle)

Perimeter of track = [2 x 22÷ 7 × 28 ] + [ 2 x 112]

= (2 x 22 x 4) + ( 224) m

= 176 + 224 m

= 400m = Distance covered by Kanika in one round around track