Vinay wants to construct a rectangular plastic tank for his house that can hold 100 ftº of water. The top of the tank is open. The width of tank will be 10 ft but the length and heights are variables. Building the tank cost 30 per sq foot for the base and 20 per sq foot for the side.
1.) In order to make it least expensive vinay needs to minimise it's
a) volume
b)Base
c)CSA
d)Cost
2.) Total cost of tank as a function of b
a) 400b+100+2000/b
b)400b-400+2000/b
c)100b+400+2000/b
d)400b+400+2000/b
Answers
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Step-by-step explanation:
1.To make the least expensive tank. The cost must be minimised.
Option d
2.To find the total cost.
1.Find the total area.
-base area(BA) which is the area of the base.
-lateral surface area(LSA) which is the area of the 4 walls.
2. Multiply with the given cost.
Option d (Correction: 3000/b)
Hope it is useful.
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