Answer :
The original height of the candle was approximately 26 inches. Rounded to the nearest inch, it will be 27 inches.
Formula for the surface area of a cylinder:
S = 2πrh + 2πr^2
where S is the surface area, r is the radius, and h is the height.
The radius is 2 inches and that the surface area after burning half the candle is 176 square inches. Substitute this values in the equation for surface area:
176 = 2π(2)(h/2) + 2π(2)^2
Simplifying:
176 = 2πh + 8π
168 = 2πh
h = 168/(2π)
h ≈ 26.75
So the original height of the candle was approximately 26 inches. Rounded to the nearest inch, the original height is 27 inches.
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