Circumference and area

Question 1

How do you calculate the circumference of a circle?

Answer 1

Pi x diameter

Question 2

How do you calculate the area of a circle?

Answer 2

PR2

Question 3

How do you calculate the area of a parallelogram?

Answer 3

Base x Height

Question 4

How do you calculate the area of a trapezium?

Answer 4

1/2 (a+b) x height

Question 5

How do you calculate the length of an arc?

Answer 5

(Pi x d) x angle/360

Question 6

How do you calculate the area of a sector?

Answer 6

(PR2) x angle/360

Question 7

How do you calculate the angle of a sector?

Answer 7

Area of sector/(PR2) x 360

Question 8

How to you calculate the volume of a prism?

Answer 8

area of cross section x length

Question 9

How do you calculate the volume of a pyramid?

Answer 9

base area x height/ 3

Question 10

How do you calculate the volume of a cylinder?

Answer 10

PR2 x length

Question 11

How do you calculate the surface area of a cylinder?

Answer 11

PD(R + L)

Question 12

How do you calculate the volume of a cone?

Answer 12

PR2 x H/ 3

Question 13

How do you calculate the surface area of a cone?

Answer 13

PR2 + PRL

Question 14

How do you calculate the area of a sphere?

Answer 14

4/3xPR3

Question 15

How do you calculate the surface area of a sphere?

Answer 15

4PR2