Answer:
18 minutes
Step-by-step explanation:
60/40=1.5
12 x 1.5 = 18
Answer:
The surface area of the cylinder is ![\mathbf{70\pi\;\textbf{cm}^2}](https://tex.z-dn.net/?f=%5Cmathbf%7B70%5Cpi%5C%3B%5Ctextbf%7Bcm%7D%5E2%7D)
Step-by-step explanation:
The surface area of a cylinder is express
![S=2\pi rh](https://tex.z-dn.net/?f=S%3D2%5Cpi%20rh)
where
is the radius of the cylinder and
its height
Therefore, if the radius of the cylinder is
![r=5\;\text{cm}](https://tex.z-dn.net/?f=r%3D5%5C%3B%5Ctext%7Bcm%7D)
and its height
![h=7\;\text{cm}](https://tex.z-dn.net/?f=h%3D7%5C%3B%5Ctext%7Bcm%7D)
the surface area should be
![S=2\pi r h\\S=2\pi (5\;\text{cm})(7\;\text{cm}) \;\;\;\;\;\Rightarrow\;\;\;\;\; \mathbf{S=70\pi\;\textbf{cm}^2}](https://tex.z-dn.net/?f=S%3D2%5Cpi%20r%20h%5C%5CS%3D2%5Cpi%20%285%5C%3B%5Ctext%7Bcm%7D%29%287%5C%3B%5Ctext%7Bcm%7D%29%20%5C%3B%5C%3B%5C%3B%5C%3B%5C%3B%5CRightarrow%5C%3B%5C%3B%5C%3B%5C%3B%5C%3B%20%5Cmathbf%7BS%3D70%5Cpi%5C%3B%5Ctextbf%7Bcm%7D%5E2%7D)
The answer is C. because 1/10 + 3/10 = 4/10. 4/10 can be simplified to 2/5
Answer:
Step-by-step explanation:
<h2>C A L C U L A T I O N S</h2>