Question

The height of a right circular cone is 7cm and radius of its base is 3 cm find its curved surface area, total surface area and volume ​

Answer 1

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Answer 2

height is equal to 7 cm base is equal to 3 cm
since curved surface area = 22/7 *r*b
therefore curved surface area= 22/7*7*1.5cm
=33cmsquare
Volume of cone=h*22/7*r square(radius)/3
=7*22/7*1.5*1.5/3
=16.49cm
total surface area of a cone = area of base + curved surface of cone
=b*h*1/2+33cm square
=3*7*1/2+33cm
=10.5+33cmsquare
43.5 cm square
hope it helps you