Answer: area= 4.7
Area=pi*r^2=3.14*1.5=4.71=4.7 (nearest tenth)
6a+8b; when a variable is next to a coefficient then that means they are multiplying each other, we just don't know what a or b is.
Represent the unknowns.
<span>Let x = length </span>
<span>since the width is 3/4 of the length, </span>
<span>Let (3/4)x = width </span>
<span>Recall that the area of rectangle is just width multiplied by the length, </span>
<span>A = w * l </span>
<span>Substituting, </span>
<span>432 = (3/4)x * x </span>
<span>432 = (3/4)x^2 </span>
<span>432 * 4/3 = x^2 </span>
<span>576 = x^2 </span>
<span>Get the square root of both sides, </span>
<span>x = 24 feet (length) </span>
The answer is B, I attached a picture of the steps.
