We can find the area of the big triangle, and subtract it from the small 4 x 2 triangle.
bh/2
3*8/2
12
bh/2
2*4/4
4
12 - 8
4 unit²
To find the perimeter:
a² + b² = c²
9 + 64 = c²
73 = c²
√73 = c
√73 + 3 + 8 + 2 + 4
√73 + 17
Hope this helps!
at least 4 different angles are present
Answer: 45
Use PEMDAS
first do what in the parentheses
(8+7)
8 + 7 = 15
Now we have
3(15)
This is multiplication
3 x 15 = 45
Area = L x H
area = 20 x 15 = 300 square feet
Enrique+levi=386
enrique=221
subsitute
221+levi=386
subtract 221 frm botoh sides
levi=386-221
levi=165
levi has 165 cards
