Answer:
C. 77
Step-by-step explanation:
Let l be length and w be the width of the rectangle,
Thus, the perimeter of the rectangle = 2 ( length + width )
= 2 ( l + w )
According to the question,
l - w = 4 ⇒ l = 4 + w
Also, 2(l+w)=36
2(4 + w +w)=36
4 + 2 w = 18
2w = 14
⇒ w = 7
So, the width of the rectangle is 7 inches.
And, length = 4 + 7 = 11 inches
Thus, the area of the rectangle = length × width
= 11 × 7
= 77 in²
Option 'C' is correct.