A rectangular hall is $25 m$ long and $10 m$ wide and its height is $6 m$ . Find the cost of painting the walls of the hall at the rate of $R S 2$ per sq.m.

Open in App

Solution

Length of the rectangular hall $= 25 m$
Breadth of the rectangular hall $= 10 m$
Height of the rectangular hall $= 6 m$
Painting the walls of the hall $=$ Curved Surface area of a cuboid
Curved Surface area of a cuboid $= 2 (b h + l h)$
Curved Surface area of a cuboid $= 2 (10 \times 6 + 25 \times 6) = 2 (60 + 150) = 420 s q . m$
Cost of painting the wall per sq.m $= R s .2$
Cost of painting the wall $420 s q . m = R s .2 \times 420 = R s .840$

Suggest Corrections

Similar questions

The perimeter of floor of a rectangular hall is $250 m$ . If its height is $6 m$ , find the cost of painting its four walls at the rate of Rs. $20$ per meter square.

Q. The floor of a rectangular hall has a primeRecharge 250m.if the cost of painting the four walls at the rate of rupees 10per m^2 is 15000,find the height of the hall

Q. The floor of a rectangular hall has a perimeter

250 m

. If the cost of painting the four walls at the rate of

R s . 10

per

m^{2}

R s . 15000

, find the height of the hall.

Q. The floor of a rectangular hall has a perimeter

300

cm. Let the cost of painting of four walls at the rate of Rs.

12

per

c m^{2}

is Rs.

24, 000,

then find the height of the hall.

Join BYJU'S Learning Program

A rectangular hall is 25m long and 10m wide and its height is 6m. Find the cost of painting the walls of the hall at the rate of RS2 per sq.m.

A rectangular hall is $25 m$ long and $10 m$ wide and its height is $6 m$ . Find the cost of painting the walls of the hall at the rate of $R S 2$ per sq.m.