Question

How can i do this???

a rectangle is 8 feet ling and 6 feet wide. if each side is increased by the same amount, the area of the new rectangle is 72 square feet more than the area of the original rectangle . find the length and width of the new rectangle in feet..

Answer 1

(8+a)(6+a)=8*6 +72
now solve for a

Answer 2

Area of given rectangle = length x breadth =6 x 8=48 ft^2
Area of New rectangle =(8+x)(6+x)= 48 +72

Answer 3

area = length times width
A = LW

The original rectangle had area 8ft * 6ft = 48 ft^2

The new rectangle is 72ft^2 more so ... (8+x)*(6+x) = 48 ft^2 + 72 ft^2

You must solve for x. :)

Answer 4

12ft n 10ft

Answer 5

(8+x)(6+x)=120

48+8x+6x+x^2=120

x^2+14x+48=120

x^2+14x-72=0

Answer 6

Thanks guys!!! :)