I don’t know spanish sorry
9. 10%
10. 0.7
11. 68.5
12. 4
Answer:
3.25 or 3 1/4 inches
Step-by-step explanation:
A = lw
22.75 = 7w
w = 3.25 which is 3 1/4
First find the volume of the pipe:
V = 3.14*length*(outsideradius^2 - innerradius^2)
= 3.14 * 10*(2.5^2 - 2^2)
= 70.65 cm^3
Now find the mass using the formula density = mass / volume:
Mass = volume * density
= 70.65 cm^3 * 0.92g/cm^3
= 65 grams
Answer:
78cm
Step-by-step explanation:
780mm = 780/1000 (m)
therefore 780mm = 0.78 m
but 100cm = 1m
implying that
0.78m = 78cm