Question

21, The walls and ceiling of a room 7 m long, 5 m wide and 3.5 m high are covered wilth paper 6 dm wide Find the length of paper required, if no length less than a metre can be bought.​

Answer 1

Answer:

140m

Step-by-step explanation:

| = 7 m, b = 5 m and h = 3.5 m

Area of four walls = 2(1 + b)h = 84 m2 =

Let the length of the paper be L.

L x 6/10 = 84

L = 140 m

Length of the paper required

is 140 m.