Ask question

Ask question

All categories

3 years ago

8

What is the radius of 81π square inches

1 answer:

MrRa [10]3 years ago

3 0

It is 9 inches because the formula for the area of a circle is πr2 where the r represents the radius of the circle

The pi can be canceled out =

πr2 and 81 π leaving with

R2 and 81

The r2 represents a square number. So square root 81 and you would result in 9 as your answer

You might be interested in

What is 1/8 of 3? When i look it up it says to many different answers.

SSSSS [86.1K]

Answer:

3÷8=0.375

Step-by-step explanation:

1/8 of a number can be found by dividing the number by 8.

4 0

2 years ago

Read 2 more answers

Find out 6 rational numbers between 3 and 4

mixer [17]

Answer:

22/7, 23/7, 24/7, 25/7, 26/7, and 27/7.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

PLSSSSSSS HELPPPP SOMEBODYYYY

Deffense [45]

Answer:

64%

Step-by-step explanation:

there are 16 people aged 21 or under out of a total of 25

$\frac{16}{25} (100)=64$ %

Hope this helps

6 0

2 years ago

CAN SOMEONE HELP ME ASAP? The density of a certain material is such that it weighs 7 ounces for every 2.5 gallons of volume. Exp

lesya [120]

Answer: Density = 0.23 tons per cubic meter.

Step-by-step explanation:

Formula : $Density=\dfrac{Mass(in \ ton)}{Volume (in\ m^3)}$

1 ton = 32000 ounces

⇒ 1 ounce = 0.00003125 ton

⇒ 7 ounces = 7(0.00003125)= 0.00021875 ton

1 gallon = 0.00378541 cubic meter

2.5 gallons = 0.009475 cubic meter

Density= $\dfrac{0.00021875}{0.009475}\text{ tons per cubic meter}$

$\dfrac{21875}{94750}\text{ tons per cubic meter}\approx0.23\text{ tons per cubic meter}$

Hence, Density = 0.23 tons per cubic meter.

5 0

3 years ago

Read 2 more answers

Fraction equivalent to 25 out of 60

rosijanka [135]

Answer:

5/12

Step-by-step explanation:

Divide both numbers by the least common multiple. In this case it's 5.

25/5=5

60/5=12

3 0

3 years ago