Key in the circle answer

Exercise and reference answers

Questions

1. Answer

   0.25

   Question

   A sector has angle 90 degrees. What fraction of 360 is that, as a decimal?

2. Answer

   240

   Question

   If the angle of the minor sector is 120 degrees, what is the angle of the major sector?

3. Answer

   314

   Question

   Taking pi as 3.14, what is the area of a circle of radius 10, to the nearest whole number?

4. Answer

   54

   Question

   A sector of a circle of radius 6 has angle 180 degrees. Using pi as 3, what is its area?

Instructions

Work out each answer and key it in on the pad.

Explanation