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exis [7]
3 years ago
11

Please help ASAP ASAP asap

Mathematics
1 answer:
RoseWind [281]3 years ago
4 0
The answer is 7 R 4! hoped this helps!
You might be interested in
Can someone help me pls
Wittaler [7]

Answer:

3 cm

Step-by-step explanation:

  • V_{cylinder} = 189\pi \: cm^3 (Given)

  • h_{cylinder} = 21\: cm (Given)

  • Formula for V_{cylinder} is given as:

  • V_{cylinder} = \pi r^2h

  • \implies  189\pi = \pi r^2(21)

  • \implies \frac{ 189\pi}{21\pi} = r^2

  • \implies 9 = r^2

  • \implies \pm\sqrt 9 = r

  • \implies \pm 3 = r

  • Length of radius can not negative

  • \implies r = 3 \: cm

Hope it helps you in your learning process.

8 0
2 years ago
Read 2 more answers
Emily needs to buy 2.5 pounds of pecans for a pie.If pecans cost 1.50 per pound how much will Emily pay for pecans?
AleksandrR [38]

Answer:

3.50

Step-by-step explanation:

1.50 x 2 = 3 And their is .50 left so half of 1 pound is .50 which is 3+50=3.50

If this helped please make me brainliest :)

7 0
3 years ago
Here is an addition sentence. (13 + 5) + 5 = 23 Choose an equivalent addition sentence that shows the associative property of ad
ANTONII [103]

<span>(13 + 5) + 5 = 23
</span>
associative property of addition
<span>13 + (5 + 5) = 23</span>
6 0
3 years ago
Read 2 more answers
6. Solve the equation x2 = 80.
jonny [76]

Answer:

40

Step-by-step explanation:

80/2=40

4 0
3 years ago
Read 2 more answers
The perimeter of the base of a regular quadrilateral prism is 60 cm, the area of a lateral face is 105 cm2. Find: the volume of
Harman [31]
Since the base is a regular quadrilateral, each of its 4 sides must have length
  s = P/4
  s = (60 cm)/4 = 15 cm

The area of one lateral face is the product of side length and height.
  A = s×h
  105 cm² = (15 cm)×h
Then the height of the prism is
  h = (105 cm²)/(15 cm) = 7 cm

The area of the base is then
  B = s²
  B = (15 cm)² = 225 cm²

The volume of the prism is the product of its base area and height.
  V = Bh
  V = (225 cm²)×(7 cm) = 1575 cm³


The volume is 1575 cm³.
5 0
3 years ago
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