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2 years ago

∠ACB is inscribed in semicircle ACB of a circle with centre O then m∠ACB =

Mathematics

2 answers:

natita [175]2 years ago

7 0

Answer:

∠ACB is inscribed in semicircle ACB of a circle with centre O then m∠ACB = 90°.

Zolol [24]2 years ago

6 0

<h2>Answer:</h2>

[C] 90°.

<u>It is Because ∠ACB is formed by the diameter of the semicircle</u>.

<u>And we already know that, the angle formed by diameter measure 90° to the circle or semicircle</u>.

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Naily [24]

Let r represent the radius of cylinder.

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We will use lateral surface area of pyramid to solve our given problem.

$LSA=2\pi r h$ , where,

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$LSA=2\pi r\cdot (1.5)r$

Now we will find the total surface area of cylinder.

$TSA=2\pi r(r+h)$

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$\frac{TSA}{LSA}=\frac{2\pi r(2.5r)}{2\pi r(1.5r)}$

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2 years ago