Question

Find the cost of whitewashing the Wall of room 10 metre long 6 metre wide and 4 metre high allowing the 25 square metre for windows at rupees 50 square metre. ​

Answer 1

Answer:

rs. 11150.00

Step-by-step explanation:

total surface area:

(4*10)*2+(6*4)*2+(6*10)*2

=(40)*2+(24)*2+(60)*2

=80+48+120

=248  square metre. ​

now area of window = 25 square metre

there fore subtract area of window from T. surface area

=248-25

=223  square metre

thus the total cost becomes:

223* cost per m

=223*50

=11150.00  square metre