A rectangular metal duct has a width 8 in. If the area of a cross section is 104 in. ² , what is the height and the perimeter of a cross section? A) $h = 13 \text { in. }$ B) $h = 9 \mathrm { in } .$ C) $P = 43 \text { in. }$ D) $P = 42 \text { in. }$ E) $h = 6.5 \text { in. }$ F) $P = 21 \mathrm { in } .$

Question

Quizplus · Accepted Answer

The area of a cross section is given by the formula $A = w \times h$, where $w$ is the width and $h$ is the height. Substituting the given values, we get $104 = 8 \times h$. Solving for $h$, we get $h = 13$. The perimeter of a cross section is given by the formula $P = 2w + 2h$. Substituting the given values, we get $P = 2 \times 8 + 2 \times 13 = 42$.

A Rectangular Metal Duct Has a Width 8 In h=13 in. h = 13 \text { in. }h=13 in.

A Rectangular Metal Duct Has a Width 8 In $h = 13 \text { in. }$