The surface area of a cylinder can be determined with this formula
sa = surface area of 2 circles + surface area of side
sa = (2 × π × r²) + (2 × π × r × t)
Find the value of r (radius)
r = 1/2 diameter
r = 1/2 × 14.2
r = 7.1 cm
Plug the numbers into the formula
sa = (2 × π × r²) + (2 × π × r × t)
sa = (2 × π × 7.1²) + (2 × π × 7.1 × 12.8)
sa = 100.82π + 181.76π
sa = 282.58π
sa = 282.58 (3.14)
sa = 887.3
The surface area is 887.3 cm². The answer is third option.
only two. That is absolute value, so -3=x would be transfo into 3 by the absol values. And ofc 3=3.
so two numbers would fit as the x variable 3 and -3
Given:
John invest $5,000 in one account and $8,000 in an account paying 4% more in interest.
Total interest in one year = $1230
To find:
The rates of the investments.
Solution:
Let x% be the rate of interest on investment $5000.
Then, (x+4)% is the rate of interest on investment $8000.
Total interest is $1230. So,
Divide both sides by 130.
Now,
Therefore, $5,000 is invested at 7% and $8,000 is invested at 11%.
Hello there,
Answer:
-0.71
Step-by-step explanation:
I hope this helps.