we'd do the same as before on this one as well.
if we take 27.99 to be the 100%, what is 12 off of it in percentage?
The mean length of 6 childrens' big finger is 12.6cm.
1 answer:
14.94 cm ( to 2 dec. places )
We require the sum totals of the 2 groups before calculating the mean of all 14
using mean =
Children's sum
12.6 = ( cross-multiply )
sum = 6 × 12.6 = 75.6
Adult's sum
16.7 = ( cross- multiply )
sum = 8 × 16.7 = 133.6
Total sum of all 14 = 75.6 + 133.6 = 209.2
mean = = 14.94 cm
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Answer:
113.1
Step-by-step explanation:
Volume of sphere = × π × r²
Volume of sphere = × π × 3²
Volume of sphere = × π × 9
Volume of sphere = × 9 π
Volume of sphere = 113.1