Question

You need to lay communications cable around the perimeter of three offices, each 8' by 10'. How much cable do you need?

Answer 1

108 units

Explanation:

We are given that

Length of each office,l=10 units

Breadth of each office=b=8 units

Total number of office=3

We know that

Perimeter of rectangle=
`2(l+b)`

Using the formula

Length of cable for 1 office=
`2(10+8)=36units`

Length of cable required for 3 offices=
`36* 3=108`units

Hence, the required length of cable=108 units