Well formula is pie times radius squared times height over 3
Plug it all in and your answer is 20.94
If anything is unclear , Please notify me.
I have solved some examples. it's in the picture.
Answer:
96π cm²
Step-by-step explanation:
Use the formula for the surface area of a cylinder:
A = 2πrh + 2πr²
Plug in the height and radius, and solve:
A = 2π(4)(8) + 2π(4)²
A = 2π(32) + 2π(16)
A = 64π + 32π
A = 96π
So, the surface area of the cylinder is 96π cm²
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Step-by-step explanation:
Answer:
The total value is £268.20.
Step-by-step explanation:
Given : There are 495 coins in a bottle.
1/3 of the coins are £1 coins.
124 of the coins are 50p coins.
The rest of the coins are 20p.
To find : Work out the total value of the 495 coins?
Solution :
According to question,
Total coins = 495
of the coins are £1 coins.
i.e. The number £1 coins are

So, We have £165
124 of the coins are 50p coins.
50p=£0.50
Number of coins were

So, We have £62 .
Remaining coins were,

i.e. remaining coins are 206 are of 20p.
20p=£0.20
Number of coins were

So, We have £41.20 .
Now, Adding all of them together,
i.e. £165+£62+£41.20=£268.20
So, The total value is £268.20.