Problema Solution
Find the length of a rectangle if the width is 7cm and the diagonal 14cm.
Answer provided by our tutors
let
l = the length of the rectangle, l>0
w = 7 cm the width of the rectangle
d = 14 cm the diagonal of the rectangle
using the Pythagorean Theorem we have
l^2 + w^2 = d^2
l^2 + 7^2 = 14^2
by solving we find
l = 12.12 cm
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the length of the rectangle is 12.12 cm.