Maths Problem - Radius and Diameter

Today we played the Radius and Diameter game on Khad Academy and we were to make a DLO with three of the problems and explain how we solved the three questions. For one of the questions it says: If the radius is 7.5 what is the diameter. This was pretty easy because all you had to do was times 7.5 by 2. The answer was 15. There were 2 others that we explained in our DLO. If you don't know what the radius and the diameter is well the radius is half the circle and the diameter is times the radius. 

Radius, Circumference, Pi and Diameter

Today for Math we are learning how to find the radius and the diameter of a circle. It is easy radius is half of the circle from the centre and the diameter is the half of the circle, r x 2  = d (Radius x 2 = Diameter).