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harkovskaia [24]
2 years ago
15

Find the volume of this cone. round to the nearest tenth. 15 m 5 m

Mathematics
1 answer:
erma4kov [3.2K]2 years ago
4 0

Answer:

volume =  \frac{1}{3} \pi {r}^{2} h \\  =  \frac{1}{3}  \times 3.14 \times  {5}^{2}  \times 15 \\  = 392.5 \:  {m}^{3}

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there are 90 girls in third year, 25 of whom Study biology what percentage of third year girls study biology
Shtirlitz [24]

Answer:

27.7% of third year girls study biology

5 0
2 years ago
I need help with this problem! Must explain why.
OLEGan [10]

Answer:

95°

Step-by-step explanation:

Angle 1 and 4 are opposite angles, thus equal, so:

3x+10 = 4x-15 =>

x = 25

Angle 1 and 4 are 85°

Angle 4 and angle 6 are called allied (or co-interior) angles, which are supplementary, i.e., angle 6 = 180 - angle 4, so angle 6 = 95°.

Angle 6 and 7 are again opposite, so angle 7 is 95° as well!

7 0
2 years ago
Theres 30 kilograms of 10% apple juice. How many kilograms of apples does it need to increase the current apple juice to 25%​?
raketka [301]

The mass of the apple juice needed to increase the initial concentration to 25% is 45 kg

The given parameters;

  • <em>Mass of the apple juice, m = 30 kg</em>
  • <em>current percentage, = 10%</em>
  • <em>final percent after increment = 25%</em>

Let the mass added to increase the percentage to 30% = x

10% ----------------- 30 kg

25% ------------------ ?

= \frac{25 \times 30}{10} \\\\= 75 \ kg

The additional mass is calculated as;

x+ 30 = 75\\\\x = 75 - 30\\\\x = 45 \ kg

Thus, the mass of the apple juice needed to increase the initial concentration to 25% is 45 kg.

Learn more about percentage and ratio here: brainly.com/question/11752721

6 0
2 years ago
[888-18(240:6+216:6)]:4<br><br> Rezultatul nu este nr negativ
Goshia [24]
-120 Thats the answer

3 0
3 years ago
:
Vesna [10]

Answer:is yes

Step-by-step explanation:

no

8 0
3 years ago
Read 2 more answers
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