Question

3. A circular ground has diameter 112 m. A 7 m road runs around the park. Find the area of the road.​

Answer 1

Answer:

148cm  is the area i think thats what the calculater said

Step-by-step explanation:

Answer 2

$\large{\sf{\underline{\underline\pink{Given:-}}}}$

• Diameter of the circular ground = 112 m

• Width of the road = 7 m

$\large{\sf{\underline{\underline\orange{To\:Find:-}}}}$

• Area of the road = ?

$\large{\sf{\underline{\underline\green{Solution:-}}}}$

Radius of the ground :-

$:\implies\:\sf{\dfrac{Diameter}{2}}$

$:\implies\:\sf{\dfrac{112}{2}}$

$:\implies\:\sf{56\:m }$

Area of the ground :-

$:\implies\:\sf{\pi \times radius^2 }$

$:\implies\:\sf{\dfrac{22}{7} \times 56^2 }$

$:\implies\:\sf{9856\: m^2 }$

Radius of the ground including the path :-

↦  56 + 7

↦  63 m

Area of the ground including path :-

$:\implies\:\sf{\pi \times 63^2 }$

$:\implies\:\sf{\dfrac{22}{7} \times 63 \times 63 }$

$:\implies\:\sf{12474\:m^2}$

Area of the road :-

↦  Area of the ground including the path - Area of the ground

↦  12474 - 9856

↦  2618 m²