6. Consider a circle of diameter dem
(a) Find the area of the circle. (Express your answer in terms of d and Tt.)
(2 marks)
(b) Find the percentage increase in the area of the circle if the diameter of the circle increases by
30%
(2 marks)
Solution:

the answer is 15% decrease

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.