Explanation:
The length of a rectangle is twice the width plus 10
Let L be the length and W be the width.
L = 2W + 10
The perimeter of the rectangle must be 200 inches
Perimeter = 2 (L+W) = 200
2(2W+10+W) = 200
3W + 10 = 100
3W = 90
W = 30 inches
L = 2 x 30 + 10 = 70 inches
Area = Length x Width
Area = 30 x 70
Area = 2100 inch²
