Question

if semi circle region is 1232cm² find its perimeter​

Answer 1

Answer:

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Answer 2

diameter is 56 cm

Then radius is half of the diameter

Then radius is half of the diameterSo radius is r =56/2 = 28 cm

Now

NowArea is half of area of circle

NowArea is half of area of circle=½πr²

NowArea is half of area of circle=½πr²=½π*28²

NowArea is half of area of circle=½πr²=½π*28²=22*28*28/7*2

NowArea is half of area of circle=½πr²=½π*28²=22*28*28/7*2=22*56

NowArea is half of area of circle=½πr²=½π*28²=22*28*28/7*2=22*56=1232 cm²

Now

NowPerimeter

NowPerimeterPerimeter is πr + 2r

NowPerimeterPerimeter is πr + 2r= 22*28/7 + 2*28

NowPerimeterPerimeter is πr + 2r= 22*28/7 + 2*28= 88 + 56

NowPerimeterPerimeter is πr + 2r= 22*28/7 + 2*28= 88 + 56= 144 cm