Answer:
Step-by-step explanation:
of ![\frac{4}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B5%7D)
<em>"of" translates to a multiplication symbol in math.</em>
<em>So it's asking for: </em>
x ![\frac{4}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B5%7D)
You could cross out both fours getting to the answer of ![\frac{3}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B5%7D)
Answer:
659.4 cm^2
Step-by-step explanation:
The area of the curved surface of the cone = πrL
= π*7*16
= 3.14 * 112
= 351.68 cm^2,
Surface area of the hemisphere = 2 π r^2
= 2*3.14*7^2
= 307.72 cm^2.
Total area = 351.68 + 307.72
= 659.4 cm^2.
What we know:
Constant speed= .6m/s
Force= 350N
Time = 1800 sec
Work=force × distance
What we need to find:
How much work is done in 1800 seconds.
Distance= speed×time
=.6m/s × 1800s=1080 m
Work= 350N × 1080m
=378000 joules