Perimeter and Surface Area

Question 1

Formula for the area of a triangle:

Answer 1

1/2 base x perpendicular height

Question 2

Formula for the area of a parallelogram:

Answer 2

base x perpendicular height

Question 3

Formula for the are of a trapezium:

Answer 3

(a + b)/2 x h

=average of parallel sides x perpendicular height

Question 4

pi is….

Answer 4

irrational (can’t be written as a fraction)

Question 5

Formula for the area of a circle:

Answer 5

pi x r squared

Question 6

Formula for the circumference of a circle:

Answer 6

pi x d
OR
2 x pi x r