Question

the internal dimension of rectangular hall A 15 cm into 12 m into 4 m and there are 4 Window each of dimension 2 metre into 1.5 m and two doors each of dimension 1.5 m into 2.5 M find the cost of whitewashing all four walls of all if the cost of white washing is rs5per
m square what will be the cost of the washing if the ceiling of the hall is also it was

Answer 1

Answer:

Step-by-step explanation:

Area of Hall= two opposite walls of dimension 15*4each+ two opposite walls of dimension 12*4 each+ ceiling area 12*15;

= 2*15*4+12*4*2+12*15;

=120+96+180=396 m.;

Four windows of 2*1.5 sq.m each and Two door of 1.5*2.5 sq.m are not to be white wash;

So total area of Window and door =4*2*1.5+2*1.5*2.5;

=12+7.5;

=19.5 sq.m;

SO TOTAL AREA TO BE AVAILABLE FOR WHITEWASH IS=396-19.5=376.5sq.m;

Cost of wash per square. Mtr is =5;

So total cost=376.5*5=1882.5 rupees