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RoseWind [281]
3 years ago
12

The square root of 80

Mathematics
1 answer:
pochemuha3 years ago
6 0
Sqrt(80) = Sqrt(16) x sqrt(5)
= 4 x sqrt(5)

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Correct answer only need urgent help
Andreas93 [3]

Answer:

Step-by-step explanation:

Use the formule V=4/3 *Pi*R^3

where R =10

so V=4/3*Pi*10^3

v= 4000Pi/3 =4188.7902

8 0
2 years ago
grandpa joe wants to open an account for his grandchildren that he hopes will have $80,000 in it after 20 years. how much must h
kirill [66]

Answer:

$46185.04

Step-by-step explanation:

80000 = X(1 + 0.0275/12)^(20×12)

X = 46185.03749

3 0
3 years ago
The lateral area of a cylinder is 325 pi inch^2. The radius is 13 in. Find the surface area and volume. Please show all work!!!
USPshnik [31]
Answer:

Surface area =  663π in².
Volume = (676/3)π in² ≈ 225.33 π in²

Explanation:


1) We know the radius and the lateral area.

2) With the radius you can find the areas of the top and the bottom.

For that, you use the formula: 

area of the top = area of the bottom = π r² 


∴ π (13 in)² = 169π in² (each)


3) Then, the surface area is the sum of the lateral area and the two bases (top and bottom)

surface area = lateral area + bottom area + top area = 325π in² + 2×169π in² = 663π in².

3) You  can also find the height of the cylinder.

Use the formula: lateral area = 2π r h


∴ h = lateral area / [2 π r]

⇒ h = 325 π / [ 2π (13) ] = 12.5 in


4) With  the height you can find the volume.

Use the formula: V = (4/3) π r³ 

∴ V = (4/3) π (13 in)³ = (676/3)π in² ≈ 225.33 π in²
8 0
3 years ago
WXY is a right triangle. <br><br> A. True. <br> B. False.
lora16 [44]

Answer:

B. False


Step-by-step explanation:

According to pythagorean theorem, for this to be a right triangle, the sum of  square of the length of the two legs must equal square of the length of the hypotenuse (longest side).

So  (\sqrt{34} )^{2}  should equal  (\sqrt{18} )^{2}+(\sqrt{18} )^{2}

  • <em>We also know that  (\sqrt{a} )^{2}=(\sqrt{a})(\sqrt{a})=a</em>

Hence,  (\sqrt{18} )^{2}+(\sqrt{18} )^{2}=18+18=36  , and

(\sqrt{34} )^{2}=34

They ARE NOT EQUAL, so the triangle is NOT a right triangle.

5 0
3 years ago
Read 2 more answers
The base length of a triangle is 8 feet and the height is 4 feet. What is the area of the triangle?
sweet [91]
8x4=32
32 divided by 2 = 16
the answer is 16 square feet

hope this helps :)
3 0
3 years ago
Read 2 more answers
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