Estimate a 20% tip on a dinner bill of $179.62 by first rounding the bill amount to the nearest ten dollars.

$216

Step-by-step explanation:

Round the bill to $180, and multiply by 0.2. An easy way to do this is to multiply 180 by 2. We get 360, and divide that by 10. This gives us our 20% tip at $36. Add this to $180 to get $216.

square root of 36/6 = 2.449489743

square root of 16/6 = 1.632993162

square root of 6 = 2.449489743

the answer is square root of 16/6 because the square root of 36/6 is the same answer as square root of 6 = 2.449489743

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice