Question

11.2 m x 6 mx 5.8 m. Find the area of the iron sheet required to make the cistern.
12. The volume of a block of gold is 0.5 mº. If it is hammered into a sheet to cover an area of
1 hectare, find the thickness of the sheet.
volume 0.5
0.5 x 100 x 10r​

Answer 1

Cisterns are cuboidal in shape.

dimension = 11.2m × 6m × 5.8m

capacity = volume = lbh = 11.2m × 6m × 5.8m = 389.76 m³

1 m³ = 1000l

So capacity = 389.76×1000 = 389760 Litre

area of iron sheet required = total surface area of cistern

= 2(lb+bh+lh)

= 2(11.2×6 + 6×5.8 + 11.2×5.8)

= 2(166.96) m²

= 333.92 m²

capacity = 389.86 m³

area of sheet required = 333.92 m²

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Answer 2

Answer:

333.92 m² your answer please mark me as brainlist please