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3 years ago

What’s the area of the shaded region?

Mathematics

1 answer:

Leni [432]3 years ago

5 0

Answer:

217.04 cm²

Step-by-step explanation:

We should first calculate the area of the rectangle:

A= 14*21 =294cm²

then we should substract the area of the half-cercle :

A'= (7²*π)/2=76.96 cm²

then the area of the shaded area is :

A"= 294-76.96= 217.04 cm²

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Please help with this question

vovikov84 [41]

Answer:

384π cm³

Step-by-step explanation:

Formula for the volume of a cone is $\displaystyle \large{\frac{1}{3}\pi r^2 h}$ where:—

r is radius
h is height

Our radius is given in an attachment which is 12 cm and height is 8 cm. Substitute these values in the formula:—

$\displaystyle \large{V = \frac{1}{3}\pi (12)^2 \cdot 8}\\\displaystyle \large{V = \frac{1}{3}\pi \cdot 144 \cdot 8}\\\displaystyle \large{V = 48 \pi \cdot 8}\\\displaystyle \large{V = 384 \pi}$

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Summary

Volume (Cone)

$\displaystyle \large{V = \frac{1}{3}\pi r^2 h}$ where:—

h is height or perpendicular.

r is radius.

Value of Pi (Commonly Used)

$\displaystyle \large{\pi \approx 3.14}$

__________________________________________________________

If you have any questions regarding this problem or need clarification for my answer or explanation, do not hesitate to ask in comment! Good luck on your assignment and have a great day!

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1.67 percent of 20000

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Answer:

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Step-by-step explanation:

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