
Geometry question
Hi!
May I ask you for help?
What I have is :
The triangle has sides 16, 21, and 20 ft.
How many square feet in the triangle? Round to nearest square foot.
I ried to use Arbitrary triangle calculator here:
Arbitrary triangle calculator
I've got:
Area=150.70148473058
Seems like it is the right answer, because textbook shows me 151ft.
But I want to understand the way of solving it.
Please show me step by step solution and the formula.
Thanks in advance!

Like this?
https://duckduckgo.com/?q=area+of+a+...&kl=uken&kh=1
I'm wondering how you found that site, without doing a similar kind of search to begin with.
In which case, why are you asking, when you've already searched.
