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NeX [460]
3 years ago
14

Plz help ill give u brainlist

Mathematics
1 answer:
aliya0001 [1]3 years ago
3 0
The area of the two trianglular ends is
.. (18 cm)*(40 cm) = 720 cm²

The perimeter of the triangular end is
.. 2*41 cm +18 cm = 100 cm
so the lateral area is
.. (100 cm)*(46 cm) = 4600 cm²

The total surface area is the sum of the end area and the lateral area.
.. 720 cm² +4600 cm² = 5320 cm²
You might be interested in
What is the perimeter of this figure, to the nearest unit?
lana66690 [7]

Answer:

P=38

Step-by-step explanation:

At this case I would use the circumference formula for the rounded part.

The formula of the circumference is C=2πr.

So... We know that the radius is 5 which is half of the diameter. So... C=2π5 which is C=10π or C=31.4 which we divide by 4 because on the image is 1/4th of a circle and C/4 which C=7.85 so the P of the whole figure is P=10+10+5+5+7.85 which is P=37.85 which will be P=38.

Answer: P=38

7 0
3 years ago
The general equation of the plane that contains the points (1, 0, 2), (−1, 1, −2), and the origin is of the form ax + by + cz =
ICE Princess25 [194]

Answer:

2x-z=0 is the equation of the plane.

Step-by-step explanation:

Given that the plane passes through the points (1,0,2) and (-1,1,-2)

and also origin.

Hence equation of the plane passing through three points we can use

Any plane passing through 3 given points is given as

\left[\begin{array}{ccc}x-x_1&y-y_1&z-z_1\\x_2-x_1&y_2-y_1&z_2-z_1\\x_3-x_1&y_3-y_1&z_3-z_1\end{array}\right] =0

Substitute the three points to get

\left[\begin{array}{ccc}x-1&y&z-2\\-1-1&1&-2-2\\0-1&0&0-2\end{array}\right] \\=0\\(x-1)(-2) -y(4-4)+(z-2)(1) =0\\-2x+z=0\\2x-z-=0

2x-z=0 is the equation of the plane.

4 0
4 years ago
What is -4 x 2 + 3x = -2​
Brrunno [24]

Answer:

lets goooo

-4×2+3x=-2

you multiply -4 by 2 as shown in the question

so -4×2+3x=-2

-8+3x=-2

3x = -2+8

3x =6

you divide both sides by the x variable

3x =6

3x/3=6/3

x=3

5 0
3 years ago
X=4 is a solution to the equation<br> 2<br> = x - 8<br> True<br> O False
ra1l [238]

Answer:

False

Step-by-step explanation:

2 = x - 8

Add 8 to each side

2+8 = x-8+8

10 = x

x=4 is not a solution

8 0
3 years ago
Read 2 more answers
HELP ASAP PLSSSSSSSSSSSS
ludmilkaskok [199]

Answer:

f = .39

Step-by-step explanation:

d (v) = 2.15 v^2 / (64.4 f)

v = 40

d = 138

substitute these in

138 = 2.15 (40)^2 / (64.4 *f)

simplify

138 = 2.15 (*1600) / (64.4 *f)

138 = 3440 / (64.4 *f)

multiply each side by 64.4f

138 * 64.4 f = 3440

8887.2 f = 3440

divide by 8887.2

8887.2 f /8887.2= 3440/8887.2

f=.38707

to the nearest hundredth

f = .39

8 0
3 years ago
Read 2 more answers
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