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Tems11 [23]
2 years ago
10

Jack knows the surface area of a cylinder and its radius. He wants to find the cylinder's height. He needs to rewrite the formul

a to find the cylinder's height (h) in terms of the cylinder’s surface area (A) and its radius (r). Which is the correct formula? A. h=r+A/2nr B. h=A/2nr C. h=A/2nr^-r^2 D. h=A/2nr^-r
Mathematics
1 answer:
mash [69]2 years ago
7 0

Answer:

h = A/πr²

Step-by-step explanation:

Surface area (A) of a cylinder = πr² × height (h) , where r is the radius.

h = A ÷ πr² = A/πr²

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Answer:

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Step-by-step explanation:

<em>If </em><em>two secants</em><em> are drawn from</em><em> a point outside </em><em>the circle, then the </em><em>product</em><em> of the lengths of</em><em> one secant </em><em>and its</em><em> external segment</em><em> equals the </em><em>product </em><em>of the lengths of</em><em> the other secant </em><em>and its</em><em> external segment</em><em> </em>

Let us solve the question.

∵ There is a circle in the given figure

∵ There are two secants intersected at a point outside the circle

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∵ The length of its external segment = 4

→ By using the rule above

∴ 8 × x = 12 × 4

∴ 8x = 48

→ Divide both sides by 8

∴ x = 6

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Hey there! I'm happy to help!

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