3 years ago

The cones below are similar, although not drawn to scale

2 answers:

7 0

Answer:
You first put 18 over 15 then it will become 5/6 and the radius of the first circle is 5 and its given that the cones are similar so the obvious answer is B which is 6

kenny6666 [7]3 years ago

3 0

Answer:

Step-by-step explanation:

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Find the perimeter of this semi-circle with diameter, d = 18cm. Give your answer as an expression in terms of pi.

OLga [1]

Answer:

The perimeter of the given semi-circle in terms of $\pi$ is

$P=9\pi$ cm

Step-by-step explanation:

Given that the diameter of the semi-circle is 18cm

That is d=18cm

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$r=\frac{18}{2}$

Therefore radius r=9cm

To find the perimeter of the semi-circle :

perimeter of the semi-circle $P=\pi r$

$P=\pi\times 9$ cm (where r=9 cm )

$P=9\pi$ cm

The perimeter of the given semi-circle in terms of $\pi$ is

$P=9\pi$ cm

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