Question

A rectangle has length represented as (R +5) and width represented as (R + 2).

Which expression below could represent the perimeter of the rectangle?

A.4R + 14

B.4(R + 5 + R + 2)

C.12R + 6

D. (R + 5) + (R + 2)

Answer 1

4(R + 5 + R + 2) [Option B]

Explanation:

GIVEN :-

• Length = R + 5
• Width = R + 2

TO FIND :-

• Perimeter of the rectangle

FORMULAE TO BE USED :-

For a rectangle with length 'l' and width 'w' , its perimeter = 4(l + w)

SOLUTION :-

Perimeter =
`4(R + 5 + R+2)`

=
`4(2R + 7)`

=
`8R + 14`