Question

Find the measure of breadth and height.
Q4. The length breadth and height of a room are 14m ,16m and 18 m. Find the cost of white washing the
walls of a room and ceiling at the rate of Rs.8 per m
$l \times b \times h$
​

Answer 1

Answer:

The cost of whitewashing the room is  ₹10,432...

Step-by-step explanation:

Length = 14m

Breadth = 16m

Height = 18m

Lateral Surface Area of the room = 2H(L+B)

                                                        = 2 x 18 (14+16)

                                                       = 36 x 30

                                                       = 1080$m^{2}$

Area to be whitewashed = L.S.A + L x B

                                         = 1080 + 14 x 16

                                         = 1080 + 224

                                         = 1304$m^{2}$

Cost of  whitewashing = ₹8 x 1304

                                     = ₹10,432