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Sonbull [250]
3 years ago
13

Find the value of A when pi= 3.142 and r= 5

Mathematics
1 answer:
guapka [62]3 years ago
7 0

Answer:

7.855

Step-by-step explanation:

A=pi*r^2=3.142*5^2=3.142*25=7.855

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Do you have to line up the decimals when multiplying
Readme [11.4K]
No, you do not have to line up the decimals.
5 0
3 years ago
Diego paid $46.50 for 3 concert tickets while Andrea paid 139.50 for 9 tickets. Marisol states that Diego got the better deal be
Darina [25.2K]

Answer:

Marisol is incorrct Diego and Andrea paid the same amount for each ticket . This is because 46.5 times 3 equals to 139.50 so each ticket cost the same amount of money.Since Andrea paid for 9 tickets and Diego for 3 you multiply the cost by 3 so you get the answer and see if its less or greater than Andreas aount of money.

Step-by-step explanation:

7 0
3 years ago
Select the gcf of these numbers. 25 · 5· 11 and 23· 52 · 7 a 2^2 · 3
White raven [17]
The greatest common factor of the numbers is that which is the fused factors of all the numbers without the repetition of the common factors present in the given.
                          25·5·11 = 5·5·5·11
                          23·52·7 =23·2·2·13·7
Since, there are no repeated factors, the answer would be,
                                        5·5·5·11·23·2·2·13·7
The answer unfortunately is not among the choices.
7 0
3 years ago
If 28% of a sum is 100.80 what is the sum
Sveta_85 [38]
$360.00*.28= 100.80 

<span>Or do a portion  </span>

<span>28%/100%=100.8/x </span>

<span>Then cross multiply </span>

<span>10080=28x </span>

<span>x=360</span>
4 0
3 years ago
GOF
Daniel [21]

Answer:

(x-10)(x+10)

Step-by-step explanation:

x^2 – 100

This is the difference of squares

x^2 - 10^2

We know that (a^2 - b^2) = (a-b) (a+b)

(x-10)(x+10)

3 0
3 years ago
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