A painting firm contracts to paint the exterior of a larger water tank in the shape of a half-dome (a hemisphere). The r
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A painting firm contracts to paint the exterior of a larger water tank in the shape of a half-dome (a hemisphere). The r
A painting firm contracts to paint the exterior of a larger water tank in the shape of a half-dome (a hemisphere). The radius of the tank is measured to be 150 ft with a tolerance of 19 in. (+0.75 ft) (The formula for the surface area of a hemisphere is A-2nr?; use 3.14 as an approximation for st.) Each can of paint costs $40 and covers 300 ? a) Calculated, the approximate difference in the surface area due to the tolerance. bi Assuming the painters cannot bring partial cans of paint to the job, how many extra cans should they bring to cover the extra area they may a) A (Simplify your answer)
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