Question

Find the lateral area and surface area of a cone with radius of 5 and height 12 in

Answer 1

Lateral Area of a Cone = PI * radius * slant heightLateral Area= 188.4955592154 square inches

Total surface area = Lateral Area + Base AreaBase Area = PI * 25Base Area = 78.5398163397
Total Area  = 188.4955592154 + 78.5398163397
Total Area  = 267.0353755551 square inches
Source:http://www.1728.org/volcone.htm