Question

2) Areas of two similar triangles are 225cm² and 81cm2. If a side of the smaller triangle is 12cm, then find the corresponding side of the bigger triangle. ​

Answer 1

Answer:

for similar triangles

areas ratio = square of corresponding sides

225:81 = x² : 12²

√ 225/81 = x/12

15/9 = x/12

15*12/9 = x

180/9= x

x= 20

side of bigger triangle = 20 cm