How does the measure of angle RNQ relate to the measure of arc PR? Angle RNQ is equal in measure to arc PR. Angle RNQ is half the measure of arc PR. Angle RNQ is twice the measure of arc PR. Angle RNQ is four times the measure of arc PR.

D = diameter

A = area

Pi = 3.14

R = radius

First, we have to find the area of the garden.

To find A we have to divide D by 2, which will result in the radius.

17.5 / 2 = 8.75

Then we multiply R to the second power by multiplying it by itself.

8.75 x 8.75 =  76.5625

Then multiply 76.5625 by Pi.

76.5625 x 3.14 = 240.40625

The divide 240.40625 by 30.

240.40625 x 30 = 8.014

Lisa will need about 8.014 teaspoons of fertilizer to cover her garden.

I hope this helps! :)