The common denominator would be 18. So, 5/6 becomes 15/18 and 7/9 becomes 14/18
Answer:
The correct option is C ) 109.5°
Therefore,

Step-by-step explanation:
Given:
In Triangle DEF
d = 10
e = 18
f = 12
To Find
angle E = ?
Solution:
In Triangle DEF , Cosine Rule says

Substituting the values we get


Therefore,

............As it is in Second Quadrant
Therefore,

The dimensions of the base of Box 1 are x by 3x.
The base area of Box 1 is:
3x^2
Answer:
2
Step-by-step explanation:
.....................