I need help with this problem

Mathematics

2 answers:

IrinaVladis [17]3 years ago

5 0

Answer:

367.57 in³

Step-by-step explanation:

The formula for the volume of a cylinder is $V = h\pi r^2$ , where V is the volume, h is the height, and r is the radius. The picture shows you that r = 3 in and h = 13 in.

Plug these into the formula to find the answer:

$V = (13)\pi 3^2=(13)(9)\pi =117\pi => 367.566$

Round that to the nearest hundredth to get 367.57. The units for the answer should be in cubic inches.

For the surface area, imagine laying the cylinder out. You'd see two circles, for the top and bottom, and then a rectangle, which is the side. The formula is A=2πrh+2πr². Try to do this yourself! You only need to plug in the values: r = 3 in and h = 13 in.

Vladimir [108]3 years ago

5 0

Ahellooooooooooooooooooooo

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Examine this right triangle. A right triangle has a side length of 16 meters and hypotenuse of 20 meters. Which equation can be

Sergeu [11.5K]

The equation can be used to find the missing leg in the triangle $20^{2} = 16^{2} +a^{2}$ .

<h3>What is the right triangle?</h3>

A right-angle triangle is a triangle that has a side opposite to the right angle the largest side and is referred to as the hypotenuse.

It is given that a right triangle has a side length of 16 meters and a hypotenuse of 20 meters.

From a Pythagoras theorem

$b^{2} = c^{2} +a^{2} \\20^{2} = 16^{2} +a^{2}\\20^{2}-16^{2} =a^{2}\\a^{2} = 20^{2}-16^{2} \\$