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2 years ago

For brainliest!!!! please help :)

Mathematics

1 answer:

Crazy boy [7]2 years ago

3 0

Answer:

area = 572.3 m²

Step-by-step explanation:

area = PiR²

r = 27/2

area = (3.14)(13.5²)

area = 572.3 m²

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Please I need it please me

Amiraneli [1.4K]

It should take 4 years, please mark me brainliest it would mean a lot and if you want an explanation, Comment and I’ll help you out

5 0

3 years ago

The measures of angles of a triangle are shown in the figure below solve for

irina1246 [14]

Answer:

x=51

Step-by-step explanation:

There are two ways you can go about this

You can either say that the sum of interior angles in a triangle is equal to 180 so you do 180-39-90=51

Or you could use the exterior angle theorem, which means that 90=39+x, simplify that and you get that x=51

4 0

3 years ago

Cones A and B both have volume cubic 48 π units, but have different dimensions. Cone A has radius 6 units and height 4 units. Fi

Alex_Xolod [135]

Answer:

A possible solution is that radius of cone B is 2 units and height is 36 units

Step-by-step explanation:

The volume of a cone is given by

$V=\frac{1}{3}\pi r^2 h$

where

r is the radius

h is the height

Here we are told that both cones A and B have the same volume, which is:

$V_A=\frac{1}{3}\pi r_A^2 h_A = 48 \pi$

And

$V_B=\frac{1}{3}\pi r_B^2 h_B = 48 \pi$ (2)

We also know that cone A has radius 6 units:

$r_A=6$

and height 4 units:

$h_A=4$

For cone B, from eq.(2), we get

$\frac{1}{3}r_B^2 h_B = 48\\r_B^2 h_B = 48\cdot 3 =144$

One possible solution for this equation is

$r_B = 2\\h_B = 36$

In fact in this case, we get:

$r_B^2 h_B = (2)^2\cdot 36 = 4\cdot 36 = 144$

Therefore a possible solution is that radius of cone B is 2 units and height is 36 units, and we know that in this case Cone B has the same volume as cone A because it is told by the problem.

6 0

2 years ago

A ball of radius 13 has a round hole of radius 9 drilled through its center.

GREYUIT [131]

Answer:

Step-by-step explanation:

Given

radius of sphere $R=13\ units$

Hole is drilled with radius $r=9\ units$

Now this drilled hole will be in the form of Cylinder with height equals to diameter of sphere thus

Volume of drilled hole is

$V_d=\pi \cdot r^2\cdot h$

$V_d=\pi \cdot (9)^2\cdot 26$

$V_d=2106\pi$

Volume of Sphere

$V_s=\frac{4}{3}\pi R^3$

$V_s=\frac{4}{3}\pi (13)^3$

$V_s=2929.33\pi$

Remaining volume $V_{remaining}=2929.33\pi -2106\pi =823.33\pi$

$V_{remaining}=2586.90\ units^3$

7 0

3 years ago

WILL MARK AS BRAINLIEST 4. Suppose there is a card game where you are dealt a hand of three cards. You have already learned that

Alexeev081 [22]

Answer:

Part A- 6

Part B- 3

Part C- 3/22100

Step-by-step explanation:

Part A-

Use the permutation formula and plug in 3 for n and 2 for k.

nPr=n!/(n-k)!

3P2=3!/(3-2)!

Simplify.

3P2=3!/1!

3P2=6

Part B-

Use the combination formula and plug in 3 for n and 2 for k.

nCk=n!/k!(n-k)!

3C2=3!/2!(3-2)!

Simplify.

3C2=3!/2!(1!)

3C2=3

Part C-

It is given that the total number of three-card hands that can be dealt from a deck of 52 cards is 22100. Use the fact that the probability of something equals the total successful outcomes over the sample space. In this case the total successful outcomes is 3 and the sample space is 22100.

I believe the answer is 3/22100

I honestly suck at probability but I tried my best.

4 0

3 years ago