Call the sum S. Then, you can use the definition of percentage to obtain an equation to find the value of S: 1) 28% = 28 / 100; 2) 28% of x = (28/100)x; 3) that is equal to $100.80 => (28/100)x = 100.8 => x = 100.8 * 100 / 28 => x = 360. You can verify that the 28% of 360 is 100.80: 360 * 28/100 = 100.80. <span>Then, the answer is $360.</span>
Answer:
- The surface area of the sphere in terms of r is 4πr^2 square units.
- The surface area of the cylinder in terms of r is 4πr^2 square units.
- The surface area of the cylinder and sphere are the same.
Step-by-step explanation:
The surface area of the sphere is given by the formula ...
A = 4πr^2
The surface area of the cylinder is given by the formula ...
A = 2πr^2 +2πrh
Here, the height (h) is equal to r, so this simplifies to ...
A = 2πr^2 +2πr·r = 4πr^2 . . . . . the same area as the sphere
Hello,
I believe it is true.
Hope this helped!
13. 1
14. 1
15. any number and 0 will have a quotient of 0.
for example 7/0=0 . 8/0=0 . 9/0=0
if you try and check your work using multiplication 7*0=0 . 8*0=0 . 9*0=0
then you will realize the rule is right
