The outer and inner diameters of a stone parapet around a well are 112 – InterviewSolution

InterviewSolution

1.

The outer and inner diameters of a stone parapet around a well are 112 cm and 70 cm respectively. Whatis the area of the parapet?6.AD = 112cmD BC 70 cm

Answer»

Diameters are 112 and 70 cm.So radius=56 and 35 cm

Area of parapet=π(56²-35²)=(22/7)(56+35)(56-35)=(22/7)(91)(21)=22*91*3=22*273=6006 cm²

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