What is the value of c?

Mathematics

2 answers:

Alex787 [66]3 years ago

8 0

THE ANSWER IS 5

HOPE IT HELP

oksian1 [2.3K]3 years ago

4 0

We can solve it by Pythagoras Theorem:

C² = 4² + 3²

√(C)² = √(4² + 3²) note: the rootsquare cancels the power.

C = √(16 + 9)

C = √25

C = 5

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help me find the volume and area of this figure step by step pleasefyi the answer key my teacher gave me says that the surface a

alisha [4.7K]

The volume of the shape

We have a cylinder that is cut into two. Its external radius is 5ft, while its internal radius is 4ft.

External radius = internal radius + thickness

$\begin{gathered} \text{External radius = 4ft + 1ft } \\ =\text{ 5ft} \end{gathered}$

Internal radius = 4ft (given)

Recall that the volume(V) of a full cylinder is:

$V\text{ = }\pi r^2h$

Since the cylinder is cut into two, the volume(V) is:

$V\text{ = }\frac{\pi r^2h}{2}$

height (h) = 12ft (given)

The volume of the shape:

$\begin{gathered} =\text{ Volume of cylinder with a radius of 5ft - Volume of cylinder with a radius of 4ft} \\ =\text{ }\frac{\pi\text{ }\times5^2\text{ }\times\text{ 12}}{2}\text{ - }\frac{\pi\text{ }\times4^2\text{ }\times\text{ 12}}{2} \\ =\text{ 471.239 - }301.593 \\ =169.65ft^3 \end{gathered}$

5 0

1 year ago

Please help me....))

miskamm [114]

The first picture is for number 1 and the second one for number 2.