Question

If radius of metal rod is 0.342 cm. Find the cross – sectional area of rod.

Answer 1

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Q -If radius of metal rod is 0.342 cm. Find the cross – sectional area of rod.?

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0.36760114285 cm²

Or 0.3676 cm²         (approx)

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Given- Radius=r=0.342 cm

To find - Cross sectional area=?

Solution- Area of cross section of a cylindrical rod=  area of a circle if cut                                                                                                                                                        

                                                                             parllel to the circular base

                             =$\pi$r²=22/7×0.342²

                             =22/7×0.116964

                             =0.3676cm ²       (approx)

I hope it will help you mate (✿◡‿◡)

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