each = sides of isosceles is 3in longer than the base,perimeter is 2ft find the length of base

Question

Thanks ....

Answer 1

start: isos triangel, rim leng=2 ft, sides 2 inch longer than base

rim leng=3*base+2inch+2inch

3*base=24inch-4inch=20

base=20/3=6.66666

side=(20/3)+2=8.66666

hite=vertikal line from base...hite^2+(base/2)^2=side^2

side^2=8.6666^2=44.44444

(base/2)=3.33333 ;  square=11.11111

hite^2=44.4444 - 11.1111=33.3333

hite=5.77350266

area=base*hite/2=19.243