Answer:

LENGTH of auditorium = 20m

Breadth of auditorium = 15m

Height of auditorium = 10m

Rate of painting walls =

Cost of painting the FOUR walls

We need to paint the four walls of the auditorium.Hence, we need to find the lateral surface area of the auditorium.

Lateral Surface Area of Auditorium

= 2h(l+b)

= 2(10)(20 + 15)

= 20(35)

=

Cost of painting four walls

= Rate × Area

= 750 × 700

= Rs.525000

Therefore, the cost of painting four walls of the auditorium is Rs.525000 only.

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Answer:

the answer is 525000

Step-by-step explanation:

2h (l+b)

2(10)(20+15)

20(35)= 20 ×35 = 700 m cube

cost =Rate × area

= 750 ×700

=525000

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