Question 332306
A garden is in the shape of a circle with a diameter of 15 meters.
 A sidewalk 2 meters wide is to be built around the garden.
 Calculate the area of the sidewalk. 
Express your answer in square meters accurate to two decimal places. 
:
15/2 = 7.5m, radius of the garden
then
7.5 + 2 = 9.5, is the overall radius (garden & walkway)
:
Overall area - garden area = sidewalk area
{{{pi*9.5^2}}} - {{{pi*7.5^2}}} = sidewalk area
283.53 - 176.71 = 106.82 sq/m is the sidewalk