Question

If ΔABC ~ ΔQR, ar (ΔABC) / ar (ΔPQR) =9/4 , AB = 18 cm and BC = 15 cm, then PRR is equal to

(A) 10 cm (B) 12 cm (C) 20/3 cm (D) 8 cm

​

Answer 1

Step-by-step explanation:

$\large{\boxed{\sf{\red{hope \: this \: will \: help \: you}}}} >$

Answer 2

Answer:

$\huge\underline{ \underline{ \red{your \: \: answer}}}$

Step-by-step explanation:

$\bf\purple{Given \: ABC \: \: QRP</p><p>} \\ \bf\purple{AB=18cm,BC = 15cm} \\ \\ \bf\purple{ \frac{area \: of \triangle \:ABC }{area \: of \triangle \: PQR</p><p>} = \frac{9}{4} } \\ \\ \bf\purple{ = > \frac{ {BC}^{2} }{ {PR}^{2} } = \frac{9}{4} } \\ \\ \bf\purple{ = >{PR}^{2} = \sqrt{1000} } \\ \\ \bf\purple{ = > PR = 100} \\ \\ \bf\green{The \:ratio \:of \:the \:areas\: of\: two \:similar\:}\\ \bf\green{ triangles\: is \:equal\: to\: the\: ratio \:of\: the \:squares} \\\bf\green{of \:their\: corresponding \:sides}\\ \\ \bf\red{hope \: it \: help \: you}$