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xenn [34]
3 years ago
8

A circle has a diameter 9cmPls help meeeeeeeeeeeeeeeeeeeeeee

Mathematics
1 answer:
Slav-nsk [51]3 years ago
7 0

Answer:

A=63.585 cm²

Step-by-step explanation:

Note : It is not given what to find so i am finding are of the circle.

D=9cm

r=D/2

r=9/2

r=4.5

Area of the circle :

A=πr²

A=π4.5²

A=63.585 cm²

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(1) 4p²q : 10pq²
tiny-mole [99]

Answer: (1) 2p: 5q.

(2) 3:10.

(3) 5:6.

Step-by-step explanation:

To find : Ratio

(1) 4p²q : 10pq²

=\dfrac{4p^2q}{10pq^2}\\\\=\dfrac{2p^{2-1}}{5q^{2-1}}\\\\=\dfrac{2p}{5q}

i.e. Simplified ratio of 4p²q : 10pq²  is 2p: 5q.

(2) 9 months : 2½ years

1 year = 12 months

2\dfrac{1}{2}\text{years}=\dfrac{5}{2}\text{years}\\\\=\dfrac{5}{2}\times12=30\text{ months}

Now, 9 months : 2½ years = \dfrac{9\text{ months}}{30\text{ months}}=\dfrac{3}{10}

Hence, Simplified ratio of 9 months : 2½ years is 3:10.

(3) 5 m : 600 cm

1 m = 100 cm

So, 5m = 500 cm

Now, 5 m : 600 cm = \dfrac{500\ cm}{600\ cm}=\dfrac{5}{6}

Hence, Simplified ratio of  5 m : 600 cm  is 5:6.

7 0
3 years ago
Carlos says that 17.43 divided By 100 Is the same thing as doing 174.3 X 0.01 Is he correct?
Setler [38]

Answer:

Step-by-step explanation:

no. this is not true as if you simply plug it in it would not come out as the same answer. multiplying something by 0.01 and dividing it by 100 is the game but 174.3 is 10 times larger than 17.48

5 0
3 years ago
What times what equals 325
vladimir1956 [14]
65*5 is what you get when you multiply them to get 325
6 0
4 years ago
0.25(2/3y-5+1/3y-7-9y)=0.25
zzz [600]
y = -1.625 sorry if its incorrect, hope it helps tho!
5 0
2 years ago
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lakkis [162]

Answer:

10

Step-by-step explanation:

5x2

8 0
3 years ago
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