try this

a cylinder whose' area and height is given :find the radius.

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Comments

radius=25/2

Venture HI - 7 years, 3 months ago

oops it should be 25phi/2pi.

Venture HI - 7 years, 3 months ago

12.5 m

A Former Brilliant Member - 7 years, 3 months ago

not enoughn info\

Roel Pongase - 7 years, 3 months ago

pls.comment

John Dave Berdon - 7 years, 3 months ago

if we unravel the cylinder out, we can easily determine its length since we know its area is 1250phi meter squared. Therefore, its length is 1250phi/50= 25phi. Note: phi is not pi... Since we know the length, we can also easily calculate the radius of the circle since we know the perimeter of the circle= length of the unravel cylinder. Perimeter= 2pi* radius= 25phi Therefore, radius= 25phi/2pi If you want to simplify it further, then radius= (25 1.618033..)/( 2* 3.141159) =40.4508/6.2823=6.4388...

Venture HI - 7 years, 3 months ago

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$