Tallulah has 40 dimes and some nickels. The total value of her change is $5.00. How many nickels does Tallulah have?
2 answers:
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Answer:
The error was made in step 4, should have also been cancelled making the correct answer as 9 cm.
Step-by-step explanation:
Given that:
Volume of cylinder,
Radius of cylinder, r = 8 cm
To find:
The error in calculating the height of cylinder by Sandra ?
Solution:
We know that volume of a cylinder is given as:
Where B is the area of circular base and
h is the height of cylinder.
Area of a circle is given as,
Let us put it in the formula of volume:
Step 1:
Putting the values of V and r:
So, it is correct.
Step 2:
Solving square of 8:
So, step 2 is also correct.
Step 3:
Step 4:
Cancelling 64 ,
h = 9 cm
So, the error was made in step 4, should have also been cancelled making the correct answer as 9 cm.