Answer:
Assuming that d=diameter, then
C=43.96cm
Step-by-step explanation:
Diameter=14cm
14x3.14=43.96cm
Answer:
30 tomatoes
Step-by-step explanation:
this is an equivalent ratio or fraction problem.
4:2 is the same as x:15
You can set it up as a proportion 4/2 = x/15 and cross multiply.
2x=60
x=30
Answer:
49 divide by 1000 is 0.049.
hope it helps :) :) :)
Step-by-step explanation:
I think it is the last one.
1 atom of C has a mass of 12 amu (atomic mass unit).
1 atom of O has a mass of 16 amu.
1 molecule of CO₂ thus has a mass of 12 + 2×16 = 44 amu.
C thus makes up 12/44 ≈ 0.27 of the total mass of CO₂, while O makes up the remaining 32/44 ≈ 0.73.
Then in a 2 kg = 2000 g block of CO₂, carbon makes up about 12/44 × 2000 ≈ 545 g.
