(a)[2]
Calculate $AC$.
(b)[2]
If the area of triangle $ABC$ is $160\,\text{cm}^2$, determine the area of triangle $DEC$.
Mathematics 4024 · O Level · Similarity
Similarity — practice question
Triangle $ABC$ is similar in the mathematical sense to triangle $DEC$. $AB = 12\,\text{cm}$, $BC = 27\,\text{cm}$, $CD = 7\,\text{cm}$ and $DE = 3\,\text{cm}$.