The length of a rectangle is 8 feet more than it's width. The area of the rectangle is 84 square feet. Find it's length and width.

Length of the rectangle is 14 ft and width is 6 ft

Step-by-step explanation:

⇒ Area of the rectangle = length × width

⇒ 84 = x(8 + x) = 8x + x²

⇒ x² + 8x - 84 = 0

⇒ x² + 14x - 6x - 84 = 0 (Using product sum rule to factorize)

⇒ x(x + 14) - 6(x + 14) = 0

⇒ (x + 14)(x - 6) = 0

⇒ x = -14, +6 (negative value is neglected)

∴ x = 6 and x + 8 = 14

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.

17

step-by-step explanation:

51/3=17

thus 17 is your answer.