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1.if the area of an isosceles triangle is 18 sq.m,then find the hypothenuse 2.the perimeter of a semicircular region is 144 cm,it's area is... 3.the dimension of cuboid are 15cm*12cm*10cm .what is the total surface area 4.no.of surfaces of a octagonal prism is..... 5.find the volume of sphere of diameter 42 cm
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