A rectangle has a width of 3 inches. The rectangle's length is 5 times it's width. What is the area of the the rectangle
Since the area formula for a rectangle is A=lw, A meaning area, l equal to length, w equal to width, you need to use the formula. Since the rectangle's length is 5 times the width, you need to use 5w instead of l. And the width is 3 inches. 3 x 5 equals 15. The length is 15 inches. Now, plug in the equation, A = 15 x 3 The area of the rectangle is 45 inches.
the area for the rectangle is 45 inches