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Algebra
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What is the formula for curved Surface area of a cone?

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Priyanshu Patel
Priyanshu PatelLv10
24 Feb 2021
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Related questions


1) The formula for the area A of a circle with diamete d is A=pie(d/2)^2. Write an expression to represent the area of the circle.

2) The formula for the volume V of a right circular cone with radius r and height h is V = 1/3pie r^2h. Write an expression for the volume of a cone with r =3x and h=2x (Please show working)

1. Solve each formula for the indicated letter. Assume that allvariables represent nonnegative numbers.
A = pr^2 + prs, for r (Surface area of a cone)

2. in solving the equation (x + 3)(x - 3) = -8, Eric stated thatthe solution would be x + 3 = -8 => x = -11 or (x - 3) = -8=> -5
However, at least on of these solutions fails to work whensubstituted back into the original equation. Why is that? Pleasehelp Eric to understand better, solve the problem youself, andexplain you reasoning.

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