All categories

3 years ago

The radius of a circle is 3 cm. Find it's area in terms of pi. 28.27 cm2 is wrong

Mathematics

1 answer:

sladkih [1.3K]3 years ago

5 0

Answer:

9 $\pi$

Step-by-step explanation:

The reason why that is wrong is because it says in terms o pi which means you do NOT multiply pi by the radius squared.

EQUATION FOR AREA OF A CIRCLE: $\pi r^{2}$

When you put it all together you get: $\pi * 3^{2}$ which equals $9\pi$

DO NOT MULTIPLY 9 AND PI. IT'S JUST 9 $\pi$

hope this helped :)

You might be interested in

Help me to do <br>this simplify

kenny6666 [7]

Answer:

The coefficient is 1

Collect like terms

Calculate the sum

7 0

3 years ago

Read 2 more answers

Please help me out with this question

oee [108]

The answer is B cause you add 6 and 2

4 0

3 years ago

For some postive value of Z, the probability that a standardized normal variable is between 0 and Z is 0.3770. The value of Z is

Talja [164]

Answer:

1.16

Step-by-step explanation:

Given that;

For some positive value of Z, the probability that a standardized normal variable is between 0 and Z is 0.3770.

This implies that:

P(0<Z<z) = 0.3770

P(Z < z)-P(Z < 0) = 0.3770

P(Z < z) = 0.3770 + P(Z < 0)

From the standard normal tables , P(Z < 0) =0.5

P(Z < z) = 0.3770 + 0.5

P(Z < z) = 0.877

SO to determine the value of z for which it is equal to 0.877, we look at the

table of standard normal distribution and locate the probability value of 0.8770. we advance to the left until the first column is reached, we see that the value was 1.1. similarly, we did the same in the upward direction until the top row is reached, the value was 0.06. The intersection of the row and column values gives the area to the two tail of z. (i.e 1.1 + 0.06 =1.16)

therefore, P(Z ≤ 1.16 ) = 0.877

8 0

3 years ago

Simplify. (2m3n2)5 10m8n7 32m8n7 32m15n10 10m15n10

Crank

Answer:

10m15n10

Step-by-step explanation:

5x2m=10m

5x3n=15n

5x2=10

so you get 10m15n10

you can't simplify it anymore because none of them have the same variables

5 0

2 years ago

Read 2 more answers

To make a specific orange color, a painter uses 14 of a can of red paint and 12 of a can of yellow paint. Fill in each statement

Otrada [13]

Answer: For every 1 can of red paint, the number of yellow paints used by the painter is $\frac{6}{7}$ and

There are approximately 29 cans of yellow paints for 34 cans of red paints.

Step-by-step explanation:

Since we have given that

Number of cans of red paint = 14

Number of cans of yellow paint = 12

According to question, we have to find that for every 1 can of red paint the painter uses what number of yellow paints;

Since the ratio of red paint to yellow paint is given by

$14:12\\\\7:6\\\\1:\frac{6}{7}$

So, for every 1 can of red paint, the number of yellow paints used by the painter is $\frac{6}{7}$

Similarly,

If Number of can of red paint is used = 34

So, Number of cans of yellow paint will be

$\frac{6}{7}\times 34\\\\=\frac{6\times 34}{7}\\\\=29\ approx.$

Hence, there are approximately 29 cans of yellow paints for 34 cans of red paints.

3 0

3 years ago

The radius of a circle is 3 cm. Find it's area in terms of pi. 28.27 cm2 is wrong​

The radius of a circle is 3 cm. Find it's area in terms of pi. 28.27 cm2 is wrong