Can someone please help me?

Answers

Answer 1

Answer: the answer is 62.8 cm^2.

cylinder surface area formula is 2*pi*a(a+h) where a is radius and h is height.
plug in your numbers in the right places and you have your answer!

Related Questions

Solve photo question. Mathematics
Multiply and simplify the product.(8 – 5i)2 Select the product. a. 39 b. 89 c. 39-80i d. 89-80i
20 divided by 3 , worked out
HW 2: Angles of TrianglesFind the missing angle: 1 Measure of Angle 1 = 67 62
Last year a large trucking company delivered 9.0 x 105 tons of goods with an average value of $17,000 per ton. What was the total value of the goods delivered? Write the answer in scientific notation

Round the number of connected computers 42,199,279 to the nearest ten million

Answers

10, 000, 000 = ten million
40, 000 ,000 is the answer for the nearest ten million

40,000,000 is the answer

Suppose oil spills from a ruptured tanker and spreads in a circular pattern. If the radius of the oil spill increases at a constant rate of 1.5 m/s, how fast is the area of the spill increasing when the radius is 30 m?

Answers

Answer:

The area of the oil spill is increasing at a rate 180 π m²/s, when the radius is 30 m.

Step-by-step explanation:

Derivative Rule:

$(d)/(dx)x^n=nx^(n-1)$
$(d)/(dx)(y^n)=ny^(n-1)(dy)/(dx)$

Given that

The radius of the oil spill increases at a rate 1.5 m/s.

i.e $(dr)/(dt)= 1.5\ m/s$

We need to find the rate of area increase i.e $(dA)/(dt)$ .

We know,

The area of the oil spills A = $\pi r^2$ ( since it spreads in circular pattern)

$\therefore A=\pi r^2$

Differentiating with respect to t

$(dA)/(dt)=\pi. 2r(dr)/(dt)$

Plug the value of $(dr)/(dt) =1.5 \ m/s$

$(dA)/(dt)=\pi. 2r(3\ m/s)$

$\Rightarrow (dA)/(dt)=6\pi r \ m/s$

Plug r= 30 m

$\Rightarrow (dA)/(dt)=6\pi (30\ m) \ m/s$

=180 π m²/s

The area of the oil spill is increasing at a rate 180 π m²/s, when the radius is 30 m.

Round the decimal number to the nearest tenth 285.429

Answers

285.4

Because the .009 bumps the .02 up to a .03
.03 does nothing to .4 so it is 285.4

What is x squared - v = w squared making x the subject?

Answers

$x^2-v=w^2\n x^2=w^2+v\n x=-√(w^2+v) \vee x=√(w^2+v)$

Letitia is making a pizza that needs to cover 36 square inches. Give two possible sets of dimensions (length and width) that will give Letitia's pizza the desired area. Also give the perimeter for each set.

Answers

ok so assuming you ahve a rectangle (since you gave legnth and width)

area=legnth times width
perimiter=L+L+W+W=2L+2W=2(L+W)

area=36
some factors are
6 and 6
4 and 9
3 and 12
2 and 18
1 and 36
those are only whole numbers, but tat is for ease

so add and mutliplyby 2 (preimiter

6 and 6, P=2(6+6)=24
4 and 9, P=2(4+9)=26
3 and 12, P=2(3+12)=30
2 and 18, P=2(2+18)=40
1 and 36, P=2(1+36=74

Which of the following equations are equivalent? Select three options,2+x=5
X+1=4
9+x=6
X+(-4)=7
-5+x=-2