ratio 25: 64, uieil imiucorresponding sides.iieir10. A solid cuboidal

1.	ratio 25: 64, uieil imiucorresponding sides.iieir10. A solid cuboidal slab of iron of dimension77 cm x 10 cm x17 cm is used to castiron pipe. If the outer diameter of the niis 5 cm and thickness is 0.5 cm. Thencalculate the length of the pipe.an
Answer» Dimension of cuboidal slab of iron are 77 cm × 10 cm × 17 cm Outer Diameter of pipe = 5 cm & thickness of pipe = 0.5 cm To find : Length of pipe let the length of pipe be l. Inner diameter of pipe = 5 - ( 0.5 + 0.5 ) = 4 cm ⇒Inner radius of pipe, = r1=4/2 = 2 cm ⇒Outer radius of pipe, =r2=5/2 = 2.5 cm According to question, volume of pipe = volume of Slab of ironπ(r2)^2h-π(R1)^2h=lbhl=1851.1cm

ratio 25: 64, uieil imiucorresponding sides.iieir10. A solid cuboidal slab of iron of dimension77 cm x 10 cm x17 cm is used to castiron pipe. If the outer diameter of the niis 5 cm and thickness is 0.5 cm. Thencalculate the length of the pipe.an

Answer»

Dimension of cuboidal slab of iron are 77 cm × 10 cm × 17 cm

Outer Diameter of pipe = 5 cm & thickness of pipe = 0.5 cm

To find : Length of pipe

let the length of pipe be l.

Inner diameter of pipe = 5 - ( 0.5 + 0.5 ) = 4 cm

⇒Inner radius of pipe, = r1=4/2 = 2 cm

⇒Outer radius of pipe, =r2=5/2 = 2.5 cm

According to question,

volume of pipe = volume of Slab of ironπ(r2)^2h-π(R1)^2h=lbhl=1851.1cm