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fiasKO [112]
3 years ago
8

What is the area of a circle with a radius of 21 cm?

Mathematics
2 answers:
Lina20 [59]3 years ago
3 0

Answer:

1384.74cm squared

Step-by-step explanation:

A= πr²

Igoryamba3 years ago
3 0
Last one 1384.74 jajajajajajaja
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Regular pentagon<br><br> sides 3.3 cm long
OleMash [197]
3.3 x 5 = 16.5 cm
Happy to Help!
7 0
3 years ago
joe is playing a game with a regular die. If the number that turns up is even he will gain 5 times the number that comes up. If
vladimir1956 [14]

Answer:

he lost 30 points.

since he rolled an odd number, he will lose 10 times the number he rolled. he rolled 3, which means he lost 30 points. you get that by multiplying 3 and 10.

5 0
3 years ago
CONGRUENT TRIANGLES WORKSHEET. NEED ASAP DUE TODAY
WINSTONCH [101]

Answer:

Congurent triangles are those which map onto them selves perfectly. This means they share the same angle measurements and side lengths. Therefor we can figure out the side lengths by using the information in both triangles.

AD=5x+11

in the congurent triangle, the corresponding side equals:

CM=7x-3

CM and AD are congurent triangles meaning their sidelengths equal the same. Therefore...

5x+11=7x-3

Now we just solve to find the length of AD and CM (equal lengths)

5x+11=7x-3

11=2x-3

14=2x

7=x

x=7

If x=7 then we can plug it in for AD to find the side length.

5(7)+11=46

Notice that CM equals the same 7(7)-3=46

This is because... they are congruent triangles.

These rules also apply for all angle measurements of congruent triangles:

The m<v is equal to the meaasure of E (corresponding angles in congrurent triangles are equal)

We already astablished what x was (x=7) meaning if we find the measure of E then we have the measure of V sicne they are corresponding angles in a congrurent triangle.

(6x7+1)=43°

therefore the m<v is equal to 43°

46 and 43° is your answer

Step-by-step explanation:

3 0
3 years ago
4m^(3)+10m^(2)-84m<br><br> Solve by factoring.
olga2289 [7]
Three solutions:
x=0
x=7/2
x=-6
8 0
2 years ago
If a/b =2 , what is the value of 6b/a
faltersainse [42]

Answer:

The answer is 3

Step-by-step explanation:

If a/b = 2, then b/a = 1/2

Now,

6b/a = 6 × 1/2 = 6/2 = 3

Thus, The answer is 3

<u>-TheUnknownScientist</u><u> 72</u>

8 0
3 years ago
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