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3 years ago

V=pier^2h solve for r

Mathematics

1 answer:

ankoles [38]3 years ago

8 0

Answer:

r = √(V/πh)

Step-by-step explanation:

V=π*r^2*h solve for r

divide both sides by πh

V/πh = π*r^2*h/πh

Simplify

V/πh = r^2

so r = √(V/πh)

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Helpp I’ll give brainilest to whoever answers first

grigory [225]

Answer:

4×5

Step-by-step explanation:

Four is being added five times by itself, so it is similar to being multiplied 5 times. I hope this helps!

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2 years ago

42-(32+4)+7<br> Evaluate the following expression

gulaghasi [49]

Answer:

Step-by-step explanation:

42 - (32 + 4) + 7 =

42 - 36 + 7 =

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3 years ago

Read 2 more answers

. Which category(s) does 75% belong? I. Real II. Whole III.Rational IV. Integer V. Irrational VI. Natural * A. III and IV only B

kifflom [539]

Answer: B.) 1 and 111 only.

Step-by-step explanation:

75% = 75/100 = 0.75

0.75 falls into the category of rational numbers. Rational numbers comprises of numbers which can be expressed in the form a/b where a and b are integers and B is not 0. Here, both 75 and 100 are integers, thus 75% is a rational number.

Irrational numbers are the opposite of rational numbers thus, 75% is not irrational.

All rational numbers and irrational numbers are REAL numbers, hence, 75% is a real number.

Natural numbers are whole digits starting from 1 e.g ( 1, 2, 3,......). Hence 75% is not a natural number

Whole numbers are natural numbers including 0. (0, 1, 2,.....). Hence, 75% is not a whole number

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3 years ago

Find the sum of the first 8 terms in the geometric sequence: 1, 3, 9, 27,

Butoxors [25]

The sum of the first 8 items in the geometric sequence:1, 3, 9, 27, ...etc is 3280.

Step-by-step explanation:

The given is,

sequence: 1,3,9,21,.. etc

Step:1

The given is based on multiplication of 3 to previous number,

( x - previous number, next number = 3 × $x$ )

First term : 1

Second term : 1 × 3 = 3

Third term : 3 × 3 = 9

Fourth term : 9 × 3 =27

Fifth term : 27 × 3 = 81

Sixth term : 81 × 3 = 243

Seventh term : 243 × 3 = 729

Eighth term : 729 × 3 = 2187

Step:2

Sum of first 8 terms $= 1 + 3 + 9 + 27 + 81 + 243 + 729 + 2187$

= 3280

Sum of first 8 terms = 3280

Result:

The sum of the first 8 items in the geometric sequence:1, 3, 9, 27, ...etc is 3280.

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2 years ago

The length of a rectangle is 4 more than its width. The area of the rectangle is 21m2 . What is the measure of the width?

iris [78.8K]

Length(l)= 4+ w
Width(w)=w
Area(A)= 21m^2

so keep in mind Area= Length × width

A= l×w
21=(4+w)(w)
21= 4w+ 2w
21=6w
w=3.5

The width is 3.5m

so the answer is about 4m

6 0

3 years ago

Read 2 more answers

V=pie*r^2*h solve for r

V=pier^2h solve for r