Question

a circular Garden has a radius of 56 metre is 7 inside the garden around it find area of the garden also find the cost of paving the road at Rs 70 per metre square​

Answer 1

Answer:-

⇒₹161,700

Step-by-step explaination:-

Given :- • Radius of the garden =56m

• Rate of paving garden =70 per m²

• Width of the road =7 m

➠Area of circle = π r²

➠Area of circular garden =22/7×56 ×50m²

➠Area of circular garden =22×8 ×56 m²

➠Area of circular garden =176×56 m²

➠Area of circular garden =9,856 m²

Now it is given that,

Inner radius =(56-7)cm =49 cm

➠Inner area of garden=22/7×49×49 m²

➠Inner area of garden =22×7×49 m²

➠Inner area of garden = 154×49 m²

➠Inner area of garden =7,546 m²

Area of road which is present between the outer and inner circular garden = (9856-7546) m²=2310 m²

Total cost of paving road at ₹70 /m²=₹ 2310×70=₹161,700

Therefore,Total cost of paving the road =₹161,700