A copper rod of diameter 1 cm and length 8 cm is drawn in to a wire of

1.	A copper rod of diameter 1 cm and length 8 cm is drawn in to a wire of length 18 m of uniform thickness. Find the thickness of wire.
Answer» A.T. Q πr² x 1800 = π x 1/2 x 1/2 x 8 ⇒ r²= 1/900 ⇒ r = 1/30 ∴ Thickness of wire = 1/15 cm.

A copper rod of diameter 1 cm and length 8 cm is drawn in to a wire of length 18 m of uniform thickness. Find the thickness of wire.

Answer»

A.T. Q

πr² x 1800 = π x 1/2 x 1/2 x 8

⇒ r²= 1/900

⇒ r = 1/30

∴ Thickness of wire = 1/15 cm.

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A copper rod of diameter 1 cm and length 8 cm is drawn in to a wire of length 18 m of uniform thickness. Find the thickness of wire.

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