Question

Plzz 21st question guyzzzz help

Answer 1

Inner Circumference=220 m
Circumference=2πr
Then
2πr=220
$2 \times \frac{22}{7} \times r = 220 \\ = r = \frac{220 \times 7}{2 \times 22} \\ r = 35m$
Now we get inner radius=35 m

Path width=7 m

Outer radius=35+7
Outer radius=42 m

Now we get Outer Radius
To make wall on Circle we have to find its Circumference
Circumference=2πr
$2 \times \frac{22}{7} \times 42 =264 \: m$

Outer Circumference=264 m
Cost Per/m=₹2

Total Cost=264×2
Total Cost=₹528

Answer 2

Hope you get the answer