Question

if triangle ABC similar to triangle d e f area of triangle d e f sequel 200m square and ab bi d is equal to 1 by 2 then area of triangle ABC is​

Answer 1

Answer:

• Length of BC is 11.2 cm.

explanation:

Given

• ΔABC ~ ΔDEF

• ar(ΔABC) = 64 cm²
• ar(ΔDEF) = 121 cm²
• EF = 15.4 cm

To find

BC

Solution

• ar(ΔABC)/ar(ΔDEF) = (BC/EF)²

• (64/121) = (BC/15.4)²

• 8/11 = BC/15.4

• BC = 8 × 15.4/11

• BC = 11.2

∴ BC = 11.2 cm.