The perimeter of a rectangle is 90 and its width is 10. What is its area?
a. 250
b. 900
c. 700
d. 350
Sol: Let L and W be the lenght width of the rectangle
Perimeter = 90
2L + 2W = 90
Given width is 10
Therefore, 2L + 2(10) = 90
2L = 70
L = 35
Area of rectangle = LxW
= 35x 10
= 350
Hence Option D is the correct answer.
Perimeter = 90
2L + 2W = 90
Given width is 10
Therefore, 2L + 2(10) = 90
2L = 70
L = 35
Area of rectangle = LxW
= 35x 10
= 350
Hence Option D is the correct answer.