Question 979176
Area of ceiling = (c² + 2cd + d²)*(c+d)² 
={{{(c+d)^2 *(c+d)^2 }}}
={{{(c+d)^4}}} 
one can of paint covers (c+d)² sq mtr.
so no of cans required = {{{(c+d)^4/(c+d)^2}}}
(c+d)²