All categories

3 years ago

I need to find surface area of a cylinder. Formula being used: S.A= L x W +

Mathematics

1 answer:

Arturiano [62]3 years ago

5 0

Answer:

90π yd²

Step-by-step explanation:

the surface area of a cylinder is the sum of the lateral area and twice the aera of one end of the cylinder: π·d·l, where l represents the length of the cylinder. Here, the lateral surface area is π·6 yd·12 yd, or 72π yd².

The two ends add the following to the total surface area:

2·π·(d/2)², or 2π·d²/4.

Thus, the total surface area of the cyl. is

A = 2π·(6 yd)²/4 + 72π yd², or

A = 18π yd² + 72π yd² = 90π yd²

Note: Please check your source. L x W + 2pi ·r ^2 is incorrect.

You might be interested in

Help plz i will give brainliest

jasenka [17]

Answer:

(If needed explanation ask in the comments! ty)

Hope This Helps! •v•

6 0

2 years ago

I WILL NAME BRAINLIEST FOR WHOEVER CAN WRITE THE ANSWER! I WILL NOT GIVE IT ANYONE WHO JUST POINTS! What is the area of the figu

PtichkaEL [24]

Answer:

$48.5cm^{2}$

Step-by-step explanation:

This shape is actually just a rectangle with a missing triangle. We can first find the area of the rectangle with $7*8=56$ and subtract the triangle.

Area of missing triangle = $\frac{1}{2} *b*h$ (b is the base and h is the height)

Base = $8-3=5$

Height = $7-4=3$

Area of missing triangle = $\frac{1}{2} *5*3=7.5$

Area of the figure: $56-7.5=48.5$

--------------------------------------------------------------------------

Alternatively, you can find the area of each individual shape and add them all up.

Area of the rectangle: $8*4=32$

Area of square: $(7-4)*3=9$

Area of triangle: $\frac{1}{2} *(8-3)*(7-4)=\frac{1}{2} *5*3=7.5$

Total Area: $32+9+7.5=48.5$

6 0

3 years ago

Read 2 more answers

Yesterday, Mary had n baseball cards. Today, she got 8 more. Using , write an expression for the total number of baseball cards

Oksana_A [137]

Answer:

n + 8 =

Step-by-step explanation:

Yesturday she had n

plus the 8 she got today

the equation is

n+8=?

3 0

3 years ago

Read 2 more answers

Brainlyest

evablogger [386]

A. 36/a
B. 55-b
C.18+c
D.49d
E.e/62

7 0

2 years ago

Michael is making a deposit with a check and wants cash back. His deposit slip has his name, his account number, the date, the a

Hoochie [10]

Answer: the net deposit amount.

Step-by-step explanation:

We know that Michael is making a deposit with a check and wants some cash back.

According to The Federal Reserve System and The Federal Deposit Insurance Corporation, the deposit slip must have the name his name, his account number, date, amount of the check, amount of cash that he want, his signature and the net deposit amount.

Hope this helps!

8 0

2 years ago