Question

Circle has a diameter of 9.7 m. Find the radius of circle A dilated by a factor of 3.6. (round your answer to the nearest tenth, include units)

Answer 1

17.5 m rounded to the nearest tenth.

Explanation:

Suppose the circle A1 is the image circle of the circle A by the dilation of factor 3.6

then the radius r1 of the circle A1 = 3.6 × (the radius r of the circle A)

which means

r1 = 3.6 × (9.7÷2) = 17.46