A rectangular tank needs to be coated with insulation. The tank has dimensions of 4 feet, 5 feet, and 3 feet. Each square foot of insulation costs $20. How much will it cost to cover the surface of the tank with insulation?
Answers.
A) $1220 B) $1330 C) $1550 D) $1770 E) $1880
The total surface area is 2(3*4 +4*5 + 3*5) = 94 square feet   The total cost is 94*$20 = $1880   The answer is $1880.94* 20= 
<gadget id="calculator">94* 20</gadget>
<output>1_880</output>
$1880   The answer is $1880.
<result>E</result>
A rectangular tank needs to be coated with insulation. The tank has dimensions of 4 feet, 5 feet, and 3 feet. Each square foot of insulation costs $20. How much will it cost to cover the surface of the tank with insulation?