3 years ago

Need help please!!! ONLY number 20 and 21 pleaseee asap I start school tomorrow!!

Mathematics

1 answer:

bogdanovich [222]3 years ago

3 0

Sorry for bad handwriting; I think this is correct for number 20!

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What is the approximate radius of a sphere with a volume of 113 cm3?O A. 3 cm O B. 4 cm O c. 2 cm O D. 5 cm

Vitek1552 [10]

Considering it's volume of 113 cm³, the approximate radius of the sphere is given by:

A. 3 cm

<h3>What is the volume of an sphere?</h3>

The volume of an sphere of radius r is given by:

$V = \frac{4\pi r^3}{3}$

In this problem, we have that V = 113 cm³, hence the radius in cm is given as follows:

$V = \frac{4\pi r^3}{3}$

$113 = \frac{4\pi r^3}{3}$

$r^3 = \frac{113 \times 3}{4\pi}$

$r = \sqrt[3]{\frac{113 \times 3}{4\pi}}$

r = 3 cm.

Hence option A is correct.

More can be learned about the volume of an sphere at brainly.com/question/25608353

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2 years ago

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poizon [28]

Answer:

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Step-by-step explanation:

Here is equation

(2 · 1 · 3) + (2 · 1 · 2) + (2 · 3 · 2)

So, I solved using PEMDAS

6 + 4 + 12 = 22

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