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2 years ago

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Mathematics

2 answers:

Anna11 [10]2 years ago

6 0

Answer:

The formula to calculate the total surface area of a cylinder is given as, the total surface area of cylinder = 2πr(h + r), while the curved surface area of cylinder formula is, curved/lateral surface area of cylinder = 2πrh, where 'r' is the radius of the base and 'h' is the height of the cylinder.

Step-by-step explanation:

hope it helps you

because I am not getting your answer

Mademuasel [1]2 years ago

5 0

Answer:

200.96 in²

Step-by-step explanation:

<u>Surface area:</u>

S = 2πrh
S = 2*3.14*4*8 = 200.96 in²

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Please help me with this problem and if you can show your work

ella [17]

Answer:

2.9

just answering wrong because i need points sorry

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2 years ago

Given each of the following areas, what would be the radius of each circle? a. A = 530.66 m2 b. A = 907.46 sq. ft. c. A = 379.94

ra1l [238]

Area for a circle is $A= \pi r^2$ . We will fill in each area and then solve for the radius. $530.66m^2= \pi r^2$ and $\frac{530.66m^2}{3.14}=r^2$ . ∴ $169=r^2$ and r = 13. For b, $907.46ft^2= \pi r^2$ and $\frac{907.46ft^2}{3.14}=r^2$ . $289=r^2$ , ∴ r = 17. For c, $379.94mi^2= \pi r^2$ , and $\frac{379.94mi^2}{3.14}=r^2$ . ∴, $121=r^2$ and r = 11. For d, $1962.5cm^2= \pi r^2$ , and $\frac{1962.5cm^2}{3.14}=r^2$ . ∴, $625=r^2$ so r = 25. And there you have it!

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3 years ago

Ms. Simpson gives her class the following problem:Simplify: 3 (x-2) + 6x. Mikey

Schach [20]

Answer:

first off, when did Marge become a teacher

Step-by-step explanation:

Second off, he didn't flip the sign inside of the parentheses.

3 0

2 years ago

Read 2 more answers

The sprit club is making school jackets to sell. The cost c (in dollars) for silkscreening supplies and jackets is c=20x+270, wh

lys-0071 [83]

Answer:

The club must sell 18 jackets to break even

Step-by-step explanation:

Given:

C = 20x + 270

Where,

x = number of jackets

Equation for revenue R in terms of the number of jackets

Revenue = price × quantity

Price of the jacket = $35

Quantity of the jacket = x

Revenue = price × quantity

= 35 * x

R = 35x

Break even point is the point at which cost is equal to revenue, that is, no gain; no loss.

Cost = revenue

20x + 270 = 35x

270 = 35x - 20x

270 = 15x

x = 270 / 15

= 18

x = 18 jackets

The club must sell 18 jackets to break even

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3 years ago

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Sammy drew a rectangle that was w inches wide. The length was 4 inches more than the width. Which expression below represents th

LekaFEV [45]

4w +8. C.

It’s 4 * width for perimeter and two of the sides are longer by 4in so 2*4=8

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2 years ago