1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Romashka [77]
3 years ago
7

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Mathematics
2 answers:
svetlana [45]3 years ago
6 0

Answer:

radius = 5 in

Step-by-step explanation:

Using the formula for calculating the area (A) of a circle

A = πr² ( r is the radius )

here A = 78.5, hence

3.14r² = 78.5 ( divide both sides by 3.14 )

r² = \frac{78.5}{3.14} = 25 ( take the square root of both sides )

r = \sqrt{25} = 5


Harman [31]3 years ago
3 0

Answer:

The radius is 5 in

Step-by-step explanation:

The area of a circle is given by the formula

A = pi *r^2

We know the area  = 78.5 in^2   (volume would be in^3   area is in^2)

78.5 = 3.14*r^2

Divide each side by 3.14

78.5/3.14 = 3.14/3.14*r^2

25 = r^2

Take the square root of each side

sqrt(25) sqrt(r^2)

5 =r

You might be interested in
prove or disprove that if you have an 8-gallon jug of water and two empty jugs with capacities of 5 gallons and 3 gallons, respe
Serjik [45]

Answer:

We can measure 4 gallon by successively.

Step-by-step explanation:

We have been given that you have an 8-gallon jug of water and two empty jugs with capacities of 5 gallons and 3 gallons, respectively. We are asked to prove or disprove that you can measure 4 gallon by successively pouring some of or all of the water in a jug into another jug.

First of all, we will pour 5 gallons of water from 8 gallon jug. Then we will pour 5 gallons of water from 5 gallon jug to 3 gallon jug. That will result in 2 gallons of water in 5 gallon jug.

Now, we will pour 3 gallons of water from 3 gallon jug to 8 gallon jug and pour 2 gallons from 5 gallon jug into 3 gallon jug. That will give us 6 gallons in 8 gallon jug and 2 gallons in 3 gallon jug and empty 5 gallon jug.

In our last step, we will fill 5 gallons jug from 8 gallon jug. After filling 5 gallon jug, we will fill 3 gallons jug from 5 gallon jug. Since 3 gallon jug already contains 2 gallons water, so it can only take one more gallon.

After pouring one gallon from 5 gallon jug, we will get 4 gallons water in 5 gallon jug.

Therefore, we can measure 4 gallon by successively pouring some of the water in a jug into another jug.

4 0
3 years ago
- 3c ( 4x - 2y ) PLESE HELP ASAP I WILL GIVE 5 STARS AND BRAINLIEST
Orlov [11]
12cx+6yc pls mark as brainliest
3 0
3 years ago
Read 2 more answers
One number is 13 more than another number. If the sum of the two numbers is 15, find the two numbers
Snowcat [4.5K]
X - the first numberx + 13 - the second number
The equation:
x + x + 13 = 152x + 13 = 15    |-132x = 2    |:2x = 1
x + 13 = 1 + 13 = 14
Answer: 1 and 14

6 0
3 years ago
If the exponent is 3 and the base is 2 whats the simplified expression
Rom4ik [11]
If the base is 2 and the exponent is the the expression would look like this → 2³. In order to simplify it, you have to multiply the base number by the number of the exponent. 

2×2×2=8
Therefore, the simplified expression would be 8.

I hope this helped.
3 0
3 years ago
Read 2 more answers
A rectangular garden is 20 feet in length and 15 feet in width. You mom wants to create a pathway that will go diagonally throug
Lesechka [4]

Answer:

i think it is 35

Step-by-step explanation:

add 20 to 15

8 0
2 years ago
Read 2 more answers
Other questions:
  • A circle is centered at the point (5, -4) and passes through the point (-3, 2).
    8·2 answers
  • Monkey chucks cereal is normally $3.25 per box but today it's on sale for 25% off . What is the new price. Round the price to th
    6·2 answers
  • Please help I will reward Brainly
    15·1 answer
  • Mike made 11 dollars a hour and he work 12 hours how much do he make
    6·2 answers
  • Help due asap <br> Show workings!
    14·1 answer
  • A farmer wants to divide his 2700 km2 of land into two separate pastures for his new horses by building a fence that will enclos
    12·2 answers
  • Some easy points for you guys!<br><br> ♫ = 3<br><br> ☺ = 4<br><br> ♫ ♫ ☺ = ??
    8·1 answer
  • Which answer best describes how tension typically varies in the plot of a narrative?
    9·1 answer
  • in 2012, the general social survey included a question that asked participants how many hours they worked a week. do males work
    5·1 answer
  • Look at the graph. How many nails are less than 1 1/2 inches long?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!