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Nikolay [14]
3 years ago
7

3. The formula to find the surface area of a sphere is to take the radius of the sphere and square

Mathematics
1 answer:
Charra [1.4K]3 years ago
6 0

Answer:

Step-by-step explanation:

Surface area of sphere = 4πr²

4πr² = 500

4*3.14*r² = 500

r² = \frac{500}{3.14*4}\\

r² = 500*100/3.14*4*100

r² = 500*100/314*4

r² = 39.80

r =√39.8

r= 6.30 meters

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klemol [59]

Answer:

2 hours and 29 minutes

Step-by-step explanation:

if you change 9 hours to minutes you get 540 plus 17 equals 557. if you turn 6 hours to minutes it's 360 plus 48 equals 408. 557 minus 408 equals 149 minutes. Now if you convert it to hours and minutes you need to divide by 60. So if you divide it you get 2 hours and 29 minutes. hope this helped! :)

4 0
3 years ago
7700÷623 with answer and remainder
Free_Kalibri [48]
7700/623
= 623*12 + 224

Therefore, the answer is 12 and the remainder is 224.

Hope this helps !

Photon
3 0
3 years ago
Read 2 more answers
I NEED HELP I NEED TO PASS THIS
tatuchka [14]

Answer:

A. the area of the large pond is 16 times the area of the small pond

Step-by-step explanation:

let's say 4 is the radius of the small circle, which means the area is 50.26548

if the large circle is 4 times the small circle, that means it's radius is 16 which means the area is 804.24772

so if you divide the big circle area by the small circle area:

804.24772/50.26548

it gives you 16.00000079577 which is rounded to 16

therefore, the bigger circle is 16 times bigger than the smaller circle

4 0
2 years ago
PLS EXPLAIN HOW THESE SEQUNCE IS FORMED<br><br>ALL ODD NUMBERS
scoundrel [369]

Answer:

7,21,27,81,87, 261, 267....

Step-by-step explanation:

All odd number series from the given figure is

7, 21, 27, 81 , 87....

We can write this series as

7, 7 x 3 , (7x3)+6, ((7x3)+6)x3, (((7x3)+6)x3)+6....

7, 21, 21+6 , 27 x 3, 81+6...

Now, the next term of the series will be

=((((7x3)+6)x3)+6) x 3

= 87 x 3

= 261

And another term of the series will be

= 261 +6

= 267

7,21,27,81,87, 261, 267....

8 0
3 years ago
Marta hopes to have a test average of at least 90 by the end of the marking period. Her grades on the first four tests have been
Virty [35]

Answer:

 Marta need to score at least 94 to receive an average of 90 or higher considering all five tests.

Explanation:

 Marks received by Marta in four tests =  86, 84, 97 and 89

 Let mark received in fifth test be x

 We have average of five test is more than or equal to 90

 So we have

    \frac{86+84+97+89+x}{5} \geq 90\\ \\ 86+84+97+89+x\geq 450\\ \\ x\geq 94

 So Marta need to score at least 94 to receive an average of 90 or higher considering all five tests.

5 0
2 years ago
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