Question #6415855Single Choice

Algebra-2

Question

Cooling Rates: The cooling rate ( R ) (in degrees per minute) of a hot object varies directly as the square of its surface area ( A ) (in cm²). If an object with an area of 100 cm² cools at 5 degrees/min, what will the cooling rate be for an area of 150 cm²?

Options

A
    10.25 degrees/min  
B
    10.75 degrees/min  
C
    11.25 degrees/min  
D
    11.75 degrees/min  

Answer & Analysis