Question

3. Diameter of the circular garden is
42 m. There is a 3.5 m wide road
around the garden. Find the area of
the road.
· Road
​

Answer 1

Answer:

Step-by-step explanation: diameter of circular garden is=42m

Then radius of circular garden=21m

The road 's wideness =3.5m

Then the radius of new circle is= 21+3.5=24.5m

Area of garden with road=πr2

= 22/7×(24.5)2

=1886.5m2

Area of garden=πr2

=22/7×21×21

= 1386m2

Area of road=area of garden with road- area of garden

=1886.5 - 1386

=500.5m2

Therefore,

The area of road is 500.5 m2.

Is this perfect?