Question

6. A circular park is surrounded by a road 21 m wide.
If the radius of the park is 105 m, find the area of the
road.​

Answer 1

Answer:

15246 sq m

Step-by-step explanation:

radius of circular park = 105 m

width of road = 21 m

radius of circular park with road = 105 + 21 = 126 m

area of road

$= \pi( {(r1)}^{2} - {(r2)}^{2} ) \\ = \frac{22}{7} ( {126}^{2} - {105}^{2} ) \\ = \frac{22}{7} (15876 - 11025) \\ = \frac{22}{7} \times 4851 \\ = 22 \times 693 \\ = 15246 \: sq \: m$

area of road is 15246 sq m

hope you get your answer