Katherine's grandmother is making a dress for Katherine. The hem of the dress needs to be trimmed with a string of small beads. How long of a string (to the nearest foot) does Katherine need to buy if the diameter of the bottom edge of the dress is 37 ft?

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Answer 1 · 2017-10-06T10:52:13

116 ft

In order to find the length of the string, you will need to calculate the circumference of the bottom edge of the dress (hem area).

- Find the radius of the bottom edge

radius = #(diameter) / 2# = #(37ft) / 2# = 18.5 ft

- Find the circumference (C) of the bottom edge

C = 2#pi#r = #2*pi*(18.5 ft)# = 116.24 ft #approx# 116 ft