Consider the formula V = pir^2 h, if r & h are measured in cm, what is the unit
ID: 1509409 • Letter: C
Question
Consider the formula V = pir^2 h, if r & h are measured in cm, what is the unit for V? a) mm b)mm^2 c)cm^3 d) m^3 e) mm^3 11. An object moves 8.0cm in 1/30 of a second. Calculate the average velocity using the formula v=x/t a) 2.4m/s b) 5.0m/s c)210m/s d)2.1m/s e)0.021m/s 12. A metal strip is 13.5cm long, 3.3cm wide & 0.25cm thick, it's volume in cm^3 is using the formula V=LWH a)11 b)7.2 c)l 15 d)11.1 13. A sphere has diameter of 2.54cm. Its radius is: a) 1.77cm b) 1.67cm c) 1.270cm d) 1.27cm 14. A sphere has diameter of 2.54cm. Using the formula V =4/3piR^3, the volume of the above sphere will be a) 8.58cm^3 b)3.14cm^3 c)6.05cm^2 d)8.57cm^3Explanation / Answer
Here ,
10)
V = pi * r^2 * h
for the unit of r and h is cm
V = cm^2 * cm
V = cm^3
the unit of V is c)cm^3
11)
average velocity = distance/time
average velocity = 8/(1/30) cm/s
average velocity = 240 cm/s
average velocity = 2.4 m/s
12)
volume of the strip = 13.5 * 3.3 * 0.25 cm^3
volume of the strip = 11.14 cm^3
13)
diameter = 2.54 cm
radius = diameter/2
radius = 2.54/2 cm
radius = 1.27 cm