Question

A tank 30 m long , 24 m wide and 4 : 5 m deep Is to be made . It is open from the top . Find the cost of iron - sheet required , at the rate of * 65 per m2 , to make the tank .

Answer 1

Answer:

!!

Step-by-step explanation:

Length of the tank = 30 m  

Width of the tank = 24 m  

Depth of the tank = 4.5 m

Area of four walls of the tank = 2[L+B] x H = 2(30 + 24) x 4.5 = 2 x 54 x 4.5 m2  

Area of the floor of the tank = L x B = 30 x 24 = 720 m2  

Area of Iron sheet required to make the tank =Area of four walls + Area of floor = 486 + 720 = 1206 m2  

Cost 2 of iron sheet required @ Rs. 65 per m = 1206 x 65 = Rs. 78390

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Answer 2

Area of tank = 2(bh+lh)+lb
= 2(108+135)+720
= 1206 m²

cost= 1206×65 = Rs78390