What is the term given to the perimeter around a circle?

What is the name of the manual calculating device which consists of beads?

What is an isosceles triangle?

How many sides does a decagon have?

What is 70.3 divided by 10?

What is two thirds of 270?

What is the square root of 81?

How many degrees are there in a right angle?

What is the smallest prime number?

What is 0.88 as a percentage?