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andrew-mc [135]
4 years ago
13

Heidi tried to use Cavalieri's principle to show that the two figures have the same volume. "The base areas are the same. Theref

ore, corresponding cross-sections have the same area. The figures have the same height. So the volumes must be the same." what was the first mistake she made?
Mathematics
1 answer:
blsea [12.9K]4 years ago
5 0

Answer:

It isn’t true that corresponding cross-sections have the same area.

Step-by-step explanation:

I got it off of khan academy.

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Given the diameter of a circle is 17 1/2cm, find its area (use π = 22/7)​
vladimir2022 [97]

Answer:

240.625 is full value. you can use sigfigs if you need.

Area is (pi)(r)^2 so (22/7)(8.75)^2

half diameter is radius

6 0
3 years ago
Please help with homework! thank you!!
KatRina [158]

Answer:

If 22 is an option, go with it. I am pretty certain it is correct.

Step-by-step explanation:

Find pie for both circles

13 x pie = 40.8

6 x pie = 18.8

40.8 - 18.8 = 22

5 0
3 years ago
Read 2 more answers
In ΔKLM, the measure of ∠M=90°, the measure of ∠K=78°, and KL = 35 feet. Find the length of MK to the nearest tenth of a foot.
Margaret [11]

Answer:

7.3 feet

Step-by-step explanation:

osK=

hypotenuse

adjacent

​

=

35

x

​

\cos 78=\frac{x}{35}

cos78=

35

x

​

35\cos 78=x

35cos78=x

Cross multiply.

x=7.2769\approx \mathbf{7.3}\text{ feet}

x=7.2769≈7.3 feet

Type into calculator and round to the nearest tenth of a foot.

4 0
3 years ago
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In an ice cream shop there is some money in a drawer. After 6 ice creams were sold, there were 70 euros left in the drawer. Afte
Verizon [17]

Answer: There were 40 euros in the drawer at the beginning.

Step-by-step explanation:

When we subtract 6 from 16, we get 10 more ice-creams were sold.

Similarly, we subtract 70 from 120, we get 50 euros was the total selling price of 10 ice-creams.

i.e. Selling price of 1 ice-cream = (50)÷10 =5 euros

Selling price of 6 ice-creams = 6 x 5 = 30 euros

Money in the drawer at the beginning = 70-30 = 40 euros

Hence, there were 40 euros in the drawer at the beginning.

7 0
3 years ago
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solong [7]

Answer:

The proportion is 3/4=9/12

Step-by-step explanation: For proportions you need to write it in a ratio, after doing that, you look at the outside numbers on the ratio on this case it is 3 and 12, multiply that and you get 36, after that do the same with the inside numbers to get another 36.

4 0
3 years ago
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