Question

(9) A tank is 20m in length, 15m in breadth and 4m in depth. Find the cost of cementing its floor and the four walls at the rate of 50 per square metre.​

Answer 1

Step-by-step explanation:

For explanation, please see the picture above.

Answer 2

Answer:

29000m^2

Step-by-step explanation:

l=20

b=15

h=4m

areaof the four walls=2h(l+b)

2*4(20+15)

=280m^2

area of the flour =l+b

20+15

=300m^2

total area=280+300

=580m^2

580*50=29000m^2

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