Question

the area of a triangle with sides 1 cm ,2cm and 2cm​

Answer 1

Answer:

46.403 cm squre .

by Heron's formula

Answer 2

Answer:

.976

Step-by-step explanation:

s=1/2(sum of all sides of triangle)

=1/2(1+2+2)=2.5

$area = \sqrt{s(s - a)(s - b)(s - c)}$

here a,b and c are sides of triangle

area=√2.5(2.5-1)(2.5-2)(2.5-2)

=√(2.5)(1.5)(.5)(.5)

=(.5)√(2.5)(1.5)=(.5)(.5)√15

=.25(3.873)=0.976sq. cm