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Aloiza [94]
3 years ago
12

A hollow ball is made of rubber that is 2 centimeter thick. The ball has a diameter of 20 centimeters at the outside surface.

Mathematics
1 answer:
MissTica3 years ago
8 0

Answer:

628.57CM²

Step-by-step explanation:

20/2=10

VOLUME OF CYLINDER=PIR^2H

22/7*10*10*2=628.57

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Peter decided that the total cost for a $24.55 pair of jeans and a $12.25 shirt was $26.80 was Peter answer reasonable? Explain
zhuklara [117]
No because

24.55
+ 12.25

1
24.50
+ 12.20

24.00
+ 12.00
.80

20.00
+ 10.00
6.80

The answer is 36.80 so he was 10.00 off.
6 0
3 years ago
During a store's closing sale, everything is 65% off. Vikram goes into the store to buy a shirt and a pair of pants, and spends
saw5 [17]

Answer:

without the sales, he would have spent $44.57

Step-by-step explanation:

Let the amount he would have spent without the sales be x. Now, if there is a 65% discount, what this means is that he is exactly paying for 100 - 65% = 35%

Now, it is this 35% of X that is equal to the amount he paid

Thus, mathematically, we have the following;

35/100 * x = 15.60

35x = 15.6 * 100

35x = 1560

x = 1560/35

x = $44.57

This means that without the sales discount, he would have paid $44.57

5 0
3 years ago
What is 47/50 as a percent
VMariaS [17]

94%

47/50 × 100 = 47 ×2 = 94 %

5 0
3 years ago
Read 2 more answers
A​ 2.5-meter piece of framing lumber has been used to cut a piece 1.65 meters long. How much of the original piece of lumber​ re
mrs_skeptik [129]

Answer:

0.85 of the original piece of lumber remains.

Step-by-step explanation:

Well, this lumber piece of lumber started as 2.5 meters long. Then, a 1.65 meter piece was cut off of it. All we need to do is subtract.

2.5 - 1.65 =

2.50 - 1.65 = 0.85.

Therefore, 0.85 of the original piece of lumber remains.

Hope this helps! :)

7 0
3 years ago
A jar contains nine blue marbles, eight yellow marbles, 11 black marbles, and 12 red marbles.
Serga [27]

Answer:

0

Step-by-step explanation:

0, because there are no white marbles in the jar. So it is impossible.

8 0
3 years ago
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