Question

if triangle abc is similar to triangle pqr area of triangle abc is 81 cm2 and area of triangle pqr is 121 cm. If altitude AD = 9cm then find PM

Answer 1

Answer:

pm will be 11 cm

Step-by-step explanation:

ar of ∆Abc/area of ∆Pqr=( AD/PM)^2

or 81/121= (9/PM)^2

or, (9/11)^2 = ( 9/PM)^2

or, 9/11 = 9/PM ( square divided from both sides)

or 9PM = 9×11

or PM = 9×11 ÷9

or, PM = 11