Answer:
Length = 19 Cm
Explanation:
Given:
Perimeter of a rectangle = 68 Cm
Assume:
Width (B) = a
Length (L) = a + 4
Find:
Length of rectangle = ?
Computation:
Perimeter of a rectangle = 2(L+B)
⇒ 68 = 2(a + a + 4)
⇒ 68 = 2(2a + 4)
⇒ 68 = 4a + 8
⇒ 68 - 8 = 4a
⇒ 60 = 4a
⇒ a = 15 Cm
So, Width (B) = 15 Cm
⇒ Length = Width (B) + 4
⇒ Length = 15 + 4
Length = 19 Cm
