A circular pond 26 yds in diameter is surrounded by a gravel path 2 yds wide. The path is to be replaced by a brick walk costing $50 per square yard. How much will the walk cost?

Answer 1

radius pond = 13 yds
radius outside walk = 13+2 = 15 yds

area of walk = pi (15^2-13^2)

Got it now ?

Answer 2

area of pond = π(13)^2 = 169π
area of the whole thing = π(15)^2 = 225π

area of "ring" = 225π - 169π
= ... square yards

and each square yard costs $50, so ....

take over

Answer 3

How do it I don’t get it? I’m just 5 yer olds and Algrebra and need help on dis question