Question

6). The perimeter of the floor of 4 room is 40m and its height is 3.5m. Find the
area of 4 walls. Also find the cos of 4 walls Rs. 1225​

Answer 1

Step-by-step explanation:

perimeter of room = 40m

height (l)= 3.5 m

breadth (b)= ?

perimeter = 2(l+b)

40m= 2(3.5+b)

40m = 7+2b

40-7 = 2b

33m = 2b

b= 33/2m

area of 4 walls= 2h(l+b)