The mass of an Iron cuboid is 235 g.If its length,
breadth and thickness are 5cm,2cm and 1cm
respectively.Find the density of iron cuboid?
Answers
Answer:
Explanation:
Hi there !!
Length , l = 4.4 metres
Breadth , b = 2.6 metres
Breadth , b = 2.6 metres
Height , h = 1 metre
Volume of a cuboid = l b h
= 4.4 × 2.6 × 1
= 11.44 m³
The cuboid is melted and is made into a hollow cylindrical pipe.
But ,
Even if shape changes ,Volume of both the shapes remains same.
Volume of cuboid = Volume of hollow cylindrical pipe = 11.44 m³
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Radius ,r = 30 cm = 0.3 metres
Thickness = 5 cm = 0.05 metre
Outer radius, R = inner radius + thickness
= 0.3 + 0.05
= 0.35 metres
Height of the pipe = Length of the pipe
Volume of a cylindrical pipe = π [ R² - r ² ] × h
= × [ (0.35)² - (0.3)² ] ×h
× [ (0.35)² - (0.3)² ] ×h = 11.44 m³
× [ 0.1225 - 0.09 ] ×h = 11.44 m³
× 0.0325 × h = 11.44 m³
h =
=
= 112 metres
Length of the pipe = 112metres
Answer:
8cm
Explanation:
5,2,1=8 and it is the solution of this question