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3 years ago

the vertices of a triangle ABC are A(2,6) B(-2,3) and C(4,1). find the coordinates of D, the midpoint of BC.

1 answer:

3 0

The midpoint of BC = D

x(mid) = (x(B) + x(C)) / 2 = (-2 + 4) / 2 = 1

y(mid) = (y(B) + y(C)) / 2 = ( 3 + 1) / 2 = 2

=> D(1,2)

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3 years ago

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3 years ago

Find the volume of a right circular cone that has a height of 10.7 in and a base with a diameter of 8.1 in. Round your answer to

scoundrel [369]

Answer:

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Then we can find the volume with the first formula and replacing we got:

$V = \pi (4.05in)^2 (10.7 in)= 551.4 in ^3$

The final answer for this case would be 551.4 cubic inches

Step-by-step explanation:

The volume for a right circular cone is given by this formula:

$V = \pi r^2 h$

And for this case the value for the height is $h = 10.7 in$ the diameter is provided $D = 2r = 8.1 in$ so then the radius is given by:

$r = \frac{D}{2}=\frac{8.1 in}{2}= 4.05 in$

Then we can find the volume with the first formula and replacing we got:

$V = \pi (4.05in)^2 (10.7 in)= 551.4 in ^3$

The final answer for this case would be 551.4 cubic inches

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3 years ago

Read 2 more answers