Duplicate of D3 Math Challenge

What is the approximate circumference of a circle with radius 5 cm ?

Which is larger, the sum of the cubes of 2 and 3 or the cube of the sum of 2 and 3?

What line divides a circle into two semicircles? 

What do you call a combination of numbers and variables involving any mathematical operations?

Genius! If the hypotenuse of a triangle is 10 cm and one leg is 6 cm how long is the other leg?

What is the name of an angle that measures between 90 degrees and 180 degrees?

What is the fifth term in the series: 77, 49, 36, 18,  ___?

A ribbon is 30 cm long. If you cut it into 1 cm pieces, how many snips would it take?

If a hole in the ground is 2m x 1m x 0.5m, how much earth does it contain?

How many digits are there in a decimal numeration system?

What term does the computer term bit derive from?

What is the area of a rectangle that is 4 cm wide and twice as long?

What is the cubed root of 27?

What is obtained by multiplying the base of a triangle by the height and dividing by two?

What is the name of a line that divides a figure into 2 congruent parts?

What are the odds of selecting an ace from a deck of cards?

What percentage of the population has an I.Q. above 100?

What do you call two numbers whose product is one? 

What ancient measure is the distance from the elbow to the tip of the middle finger?

What is the temperature of freezing in Celsius?