Cecely119
09.10.2019 •
Mathematics
The volume of a cylinder, found using 3.14 to approximate pi, is 30,395.2 cm3. the radius of the cylinder is 11 cm.
what is the height of the cylinder?
express your answer as a whole number.
cm
i am so confused, pls explain
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Ответ:
we can make it easir by solving for h already
divide both sides by pir^2
V/(hpir^2)=h
V=30395.2
pi=3.14
r=11
30395.2/(3.14*11^2)=h
30395.2/(3.14*121)=h
30395.2/379.94=h
80.002=h
about 80cm is height
Ответ:
3.5
Step-by-step explanation:
2x - 4 + 5 = 8
collecting like terms
2x = 8 + 4 - 5
2x = 12 - 5
2x = 7
divide both sides by 2
x = 7/2
x = 3.5