3 years ago

15 POINTS!

1 answer:

6 0

8x + (2x - 14)= 7x + 3x -14

10x -14= 10x - 14

These equations are identical, so it would be the identity property and the answer would either be identity or the fancy 'R'.

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Simply 3pq+5pr-2qr+qp-6rp

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Answer:

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17. A hemisphere of lead of radius 7 cm is cast into a right circular cone of height 49 cm. Find

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Answer:

$r = 3.74cm$

Step-by-step explanation:

Given

Hemisphere

$Radius = 7cm$

Cone

$Height = 49m$

Required

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First, we calculate the volume (V1) of the hemisphere.

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$V_1 = \frac{2}{3}\pi * 7^3$

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Because the lead is cast into a cone, then they have the same volume.

So, we have:

$\frac{686}{3}\pi = \frac{1}{3}\pi r^2h$

$686 = r^2h$

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$r^2 = \frac{686}{49}$

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<em>Hence, the radius of the cone is 3.74cm</em>

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3 years ago

Read 2 more answers