Do all as soon as possible (volume and surface area) â ‹Q9 A cuboidal steel box is of - Maths - Mensuration

Question

Do all as soon as possible (volume and surface
area)

â€‹Q9 A cuboidal steel box is of dimensions 50 cm
by 60 cm by 70 cm Find the cost of the steel required for making 20
such boxes if 1 m2 of a steel sheet costs Rs 60

Q10 A cuboidal box is 2 m long, 1 m broad and 0 5 m high Find the
cost of painting its outer surface at the rate of Rs 200 per
m2â€‹

Q11 A classroom is 12 m long, 9 m wide and 5 m high Find the area
of its four walls Also, find the cost of whitewashing the walls of
the classroom at the rate of Rs 25 per m2 (Ignore the
doors, windows and other openings)

Q12 A swimming pool is 25 m long, 20 wide and 2 m deep Find the
cost of cementing its floor and four walls at the rate of Rs 20 per
m2

Q13 The floor of a rectangular hall of height 6 m has a perimeter
of 300 m Calculate the cost of painting its four walls at the rate
of Rs 60 per m2 (Ignore the doors, windows and other
openings )

Sanjari Kalantri · Accepted Answer

Q9 Kindly refer to the following for the solution to a similar
query:

https://www meritnation
com/ask-answer/question/the-dimensions-of-an-oil-tin-are-26-cm-26-cm-tim/math/12121007

â€‹Q10 Kindly refer to Q1 of the following link
for the solution to a similar query:

https://www meritnation
com/ask-answer/question/1-a-wooden-table-has-to-be-varnished-on-all-the-sides-l/mensuration/8587115

â€‹For the remaining queries, we request you to
post them in separate threads to have rapid assistance from our
experts