the diameter of a circular Garden is 140 m on it's outside there is a road 7 M wide find the cost of levelling the road at Rs 1.50 per square metre
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Radius of circle = 140/2=70M
Area of circle = πr^2 = 22/7×70×70
============= =====15400sq M
Radius including road = 70+7=77
Area ......................= πr^2 = 22/7×77×77
====================== 18634 sq M
Area of Road (leveling)=18634-15400
===================== 3234 sq M
Cost of leveling road = 3234×1.5
= 4851 rupees
Answer ----4851
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Answer:
Radius of circle = 140/2=70M
Area of circle = πr^2 = 22/7×70×70
============= =====15400sq M
Radius including road = 70+7=77
Area = πr^2 = 22/7×77×77
====================== 18634 sq. m
Area of Road (levelling)=18634-15400
===================== 3234 sq. m
Cost of levelling road = 3234×1.5
= 4851 rupees
Answer ----4851
Step-by-step explanation:
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