Answer:
Step-by-step explanation:
You know two sides of the triangle and the angle between them, so use the Law of Cosines to solve the triangle.
a² = √(b²+c² - 2bc·cosA)
= √(9²+7.8² - 2·9·7.8·cos(32°)
≅ 4.8
Then use Heron's formula to calculate the area.
semiperimeter s = 0.5×(a+b+c) ≅ 10.8
area = √(s-(s-a)(s-b)(s-c)) ≅ 18.6 square units
he is wrong because 0.1 is also 0.10 greater than 0.09
The second one: 3+5=5+3 because commutative means that no matter the order the numbers are placed the out come is the same. In this case 5+3=8 and 3+5=8.
Answer:
B
Step-by-step explanation:
Answer:
diameter
Step-by-step explanation:
double the radius is the diameter