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Helga [31]
3 years ago
10

Номер 7 пожалуйсто-можно за 5мин

Mathematics
1 answer:
victus00 [196]3 years ago
4 0
If you translate it I can help u
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If the circumference of a circle is increased by 50%, then its area will be increased by (a) 100% (b) 125% (c) 150% (d) 75%​
Svetradugi [14.3K]

Answer:

Hi, There!

Option B 125% Is the Most Accurate Answer

Step-by-step explanation:

Circumference is the distance around a plane shape. So, it also measures length.

Length and area of two similar shapes are related by the formula

\frac{A_{1} }{A_{2} } =(_{} \frac{I_{1} }{I_{2\\ ^{~2~} }}

Where the A in both cases represents area and the L represents length. But here the Ls will represent circumference.  

Since the circumference of the circle increased by 50%, then the new circumference becomes

l_{2} = l_{1} + 0.5l_{1} =1.5l_{1}

Now subtracting from the original area then  

2.25 - 1=1.25

This means that the area was increased by 1.25, which means 125%

 

Hence option B is the correct answer

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3 years ago
What is -2-5(-2-7i) simplify with full working?
Valentin [98]
Please give thanks and brainliest if correct!

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3 years ago
WILL GIVE MEDAL AND FAN! you invest $5,175.00 in a stock plan. it increases 9% the first year and then loses 5% of it's value th
Ne4ueva [31]
5,175 + 9% = <span>5640.75

</span>5640.75 - 5% = <span>5302.305
</span>
Original investment = 5,175
Gain                          = 5,302.305

Subtract them both and get = <span>127.305</span>
5 0
3 years ago
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What operation would you use to covert yards and feet
Leto [7]
You would multiply, because there are 1 yards in 3 feet.
3 0
3 years ago
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Find the quotient.<br> 50a2 – 98b2<br> -5a +7b
horrorfan [7]

Answer:

2 • (5a - 7b)2

Step-by-step explanation:

6 0
3 years ago
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