MATHEMATICS MIDDLE SCHOOL

Could I please get some help I give thanks. and this is worth 18 points!!What is the surface area of a cylinder with a radius of 3 in. and a height of
4 in.? Use 3.14 for p. Show the equation you use as well as all of your work to solve.
Put each step of your work in a new line.
Could I please get some help I give thanks. and - 1

Answers

Answer 1
Answer: The formula for the surface area of a cylinder is A=2πrh+2πr².

A=2πrh+2πr²
  =2(3.14)(3)(4) + 2(3.14)(3)²
  =6.28*3*4 + 6.28*9
  =75.36+56.52
  =131.88
The surface area of the cylinder is 131.88 in.²

As for the triangular prism, the formula is SA = wh + lw + lh + ls
w=width (2.7)
h=height (1.1)
l=length (4.2)
s=side

Since you don't know the side (which is the hypotenuse of the right triangle, use the Pythagorea formula a² + b² = c²

2.7² + 1.1² = c²(side)
7.29+1.21=8.5
The side is 8.5cm.
Now plug w, h, l, and s into SA = wh + lw + lh + ls

SA= (2.7*1.1)+(4.2*2.7)+(4.2*1.1)+(4.2*8.5)
SA= 2.97+11.34+4.62+35.7
SA=54.63
The surface area of the triangular prism is 54.63cm².

I hope I helped

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Answer: x=-2

Step-by-step explanation:

addition property of equality is adding the same number to both sides of an equation does not change the equation.

distributive property: a(b+c)=ab+ac

add 3 both sides of an equation.

6x-3+3=3x-9+3

simplify an equation

6x=3x-6

subtract 3x both sides of an equation

6x-3x=3x-6-3x

simplify

3x=-6

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3x/3=-6/3

simplify

-6/3=-2

the answer should be the negative sign.

x=-2

Hope this helps!

Thanks!
I think It would be x= -1

The area of a triangle is 24 square inches. What is the height of the triangle if the base length is 8 inches?CHOICES

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Answers

The formula for the area of a ∆ is 1/2bh. So since you already have the area, solve for x.
24=(1)/(2)(8)x
24=4x
6=x
The missing side is 6 inches long.
6 is the height of the triangle . 
The formula for a triangle is 1/2 bh  

Find the area of the shape shown below. 7 3 and 3

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Answer:

the answer is gonna be 63

What is the probability of rolling a 6 on a fair number cube

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.245 hope this helps!! :)

If anyone can help me answer this it would be great thx

Answers

ok so remember
area=pir^2
area=256pi

256pi=pir^2
divide both sides by pi
256=r^2
squaer root
16=r

find r and d
d=2r
d=2(16)
d=32

radius=16ft
diameter=32ft
RADIUS:A=3.14*r^2
area=256pi

256*3.14=3.14*r^2
divide both sides by 3.14
256=r^2
square root
16=r


DIAMETER:
3.Now double the radius to get the diameter.32 is the diameter.


radius=16ft
diameter=32ft
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