Question

the Length breadth and height of a room are 5 metre 4 metre and 3 respectively find the cost of whitewashing the walls of the room and the ceiling at the rate of rupees 7.50 per metre square ​

Answer 1

Length = 5cm

Breadth = 4cm

Height = 3cm

Area of 4 wall = 2(l + b) x h

= 2(5 + 4) x 3

= 2 x 9 x 3

= 54 cm²

Cost = 7.50 x 54

= Rs405

Answer 2

its going to be 2&3(x+2)(x+3)

Explanation: