Answer: B
Step-by-step explanation:
Answer:
to estimate the result of multiplication (product), round the numbers to some close numbers that you can easily multiply mentally. One method of estimation is to round all factors to the biggest digit (place value) they have.
Step-by-step explanation:
The exact radius of a circle with a radius of 12 inches is 75.4. The formula is 2πr.
The answer to your question is 4 minutes
