Question

area of triangle,
i just want to make sure if my answers are correct.
my answers for;-
5)k=60.0cm^2.
6)k=8cm^2.

Answer 1

r u using:
\[A = 1/4 \sqrt((a+b-c) (a-b+c) (-a+b+c) (a+b+c))\]
?

Answer 2

q5 i got 59.7552...

Answer 3

using sine rule and above equation and no rounding

Answer 4

q6. i got 8.229 using cosine rule and above equation

Answer 5

@Jack1 i used formula;
k=bh/2
k=1/2*11*11 Sin99
k=60.5 *Sin 99
k=60cm^2
is it correct?

Answer 6

yep, same answer

Answer 7

59.7551 rounded to 60

Answer 8

thanks.:)