All categories

3 years ago

Work out the area of this circle radius 10cm take pie to be 3.142 and write down all the digest given by your calculator

Mathematics

2 answers:

Crazy boy [7]3 years ago

8 0

Answer:

314.2 cm²

Step-by-step explanation:

A = π·r²

= 3.142·10²

= 3.142·100

= 314.2 cm²

Alika [10]3 years ago

7 0

Answer:

314.2

Step-by-step explanation:

Area of a circle is: πr²

if radius is 10 then A = π*10² = 3.142 *100 =

314.2

You might be interested in

The Local animal shelter uses one and 3/5 bags of dog food each day to feed all of its dogs. For how many days will a donation o

horrorfan [7]

Answer: 12 ÷ 1 3/5

The problem is asking us to find how many days food would last. Since the food shelter uses 1 3/5 each day, the 12 bags of food would be split into 1 3/5 they use each day.

4 0

3 years ago

4. Describe the proportion method for solving a percentage problem:

kondor19780726 [428]

Step-by-step explanation:

Consider the provided information.

For the proportion method first set up the equation like this:

$\frac{Part}{Whole}=\frac{Percentage}{100}$

Perform the cross multiplication and then solve for the missing part.

For example:

Find 80 percentage of 10.

Step 1: Set up the equation.

$\frac{Part}{10}=\frac{80}{100}$

$\frac{Part}{10}=\frac{4}{5}$

Step 2: Perform the cross multiplication

$Part=\frac{4}{5}\times 10$

Step 3: Solve for the missing part.

$Part=4 \times 2$

$Part=8$

3 0

3 years ago

Read 2 more answers

Use the graph that shows the soulution to f(x)=g(x).

Kipish [7]

Step-by-step explanation:

The solutions are the points of intersection of f(x) and g(x), which are x = 0 or x = 2.

3 0

3 years ago

A gym's membership cost $280 in 2019. Now, it is $160. Which expression equals the percent of change?

kherson [118]

Answer:

1/2%

Step-by-step explanation:

4 0

3 years ago

Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis. Verify y

mariarad [96]

Answer:

the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis is;

$\frac{\pi }{2} [e^2 - 1 ]$ or 10.036

Step-by-step explanation:

Given the data in the question;

y = $y = e^{(x - 1 )$ , y = 0, x = 1, x = 2.

Now, using the integration capabilities of a graphing utility

y = $y = e_2}^{(x - 1 )_$ , y = 0

Volume = $\pi \int\limits^2_1 ( e^{x-1)^2} - (0)^2 dx$

Volume = $\pi \int\limits^2_1 ( e^{x-1)^2 dx$

Volume = $\pi \int\limits^2_1 e^{2x-2}dx$

Volume = $\frac{\pi }{e^2} \int\limits^2_1 e^{2x}dx$

Volume = $\frac{\pi }{e^2} [\frac{e^{2x}}{2}]^2_1$

Volume = $\frac{\pi }{2e^2} [e^4 - e^2 ]$

Volume = $\frac{\pi }{2} [e^2 - 1 ]$ or 10.036

Therefore, the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis is;

$\frac{\pi }{2} [e^2 - 1 ]$ or 10.036

3 0

3 years ago