Question

17 number Kar ke batao jaldi

Answer 1

Answer:

First we should find the perimeter of the rectangle ,

2( length + breadth)

2(100+70)=2(170)=3490 m

Next we should find the perimeter of semicircles,

2×22/7×35=220

as we have to find out the running track we should not add it's breadth ,

so, the perimeter of the track will be 3490+220-140=3570 m

So, the athlete will cover 3570

Answer 2

Step-by-step explanation:

First find the perimeter of rectangle, its length is 100m and breadth is 70m. So the perimeter will be 2(l+b) = 2(70+100)=340m

Then find perimeter of semicircles, the diameter is 70m then the radius will be 35m. Its perimeter will be Diameter+2πr= 70+22/7*35= 70+22*5=110

Perimeter of second semicircle will be same.

So total perimeter will be 340+110+110=560m