Answer:
Width = 4ft
Step-by-step explanation:
Area of the rectangular mural = Length × Breadth
7 ft tall and 11 ft wide.
(11 - 2W)(7 - 2W) = 88
77 -22W - 14W + 4W² = 88
77 -36W + 4W² = 88
4W² - 36W + 77 - 88
= 4W² - 36W - 11
W = 4ft
Answer:
3, 7
Step-by-step explanation:
The answer is 6.25 square kilometres
one side is 1.25 and the other will be 1.25*4 =5
and for the area we multiply the two 1.25*5=6.25
Answer:
7.1ft
Step-by-step explanation:
The formula for calculating the total surface area of a cube is 2(L²+L²+L²)
=2(3L²)
= 6L²
Where L is the length of the cube
If the total surface area of a cube is 302.46ft², then
302.46 = 6L²
L² = 302.46/6
L² = 50.41
L =√50.41
L = 7.1ft
The length of the side of the cube is 7.1ft
