18% of
238.8889 is 43.
Convert the percentage (18) to a decimal by dividing it over 100:

Divide 43 over 0.18:
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Answer:
Sadie took 47 minutes to finish her test.
Step-by-step explanation:
Let Laura's time be x minutes.
Then we have:
x + 3x - 16 = 68
4x = 84
x = 21 minutes.
So Sadie took 3(21) - 16 = 63-16
= 47 minutes.
The slant height is 5.19615 in