Answer:
59.15 in^2
Step-by-step explanation:
Using Heron's formula
semiperimeter , s = 1/2 ( 28.8+18+12) = 29.4
Area = sqrt ( 29.4(29.4-28.8)(29.4-18)(29.4-12) ) = 59.15 in^2
area = 58.8 in.²
This is the area of a trianlge when 2 sides and the included angle are known.
Known sides: 12 in., 18 in.
Included angle: 147°
area = (1/2)ab sin C
area = (0.5)(12 in.)(18 in.)(sin 147°)
f
12-9
If 'x' value is 2
Then x*6 - 9
Then x*6 = 12
Then x*6-9 = 12-9
the answer is 4k^2+9k+108
