The measure of the radius of the cylinder to the nearest tenth is 1.7cm
Surface area of a cylinder
The formula for calculating the surface area of a cylinder is expressed as:
S = 2πr(r+h)
Given the following
S=. 125cm²
h = 10cm
Substitute
125 = 2πr(r+10)
Expand
125 = 2(3.14)r² + 20(3.14)r
6.28r² + 62.8r - 125 = 0
Factorize
On factorizing, the measure of the radius of the cylinder will be 1.7cm
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