Answer:

Step-by-step explanation:
#We use the base diagonal and the height diagonal to calculate the beam's height:

#The volume of the beam can then be calculated as:

Hence, the beam's volume is 
We know
90
∘
=
1
right angle
=
100
g
So
A
∘
=
(
100
90
⋅
A
)
g
Hence by the given condition
B
=
(
100
90
⋅
A
)
=
10
9
A
=
A
+
(
A
9
)
Answer
Answer:
Reina sent 24
Chris sent 29
John sent 48
Step-by-step explanation:
Reina sent 24.
Chris sent 5 more
So 29.
John sent double if Reina's.
24•2
48
Then add to check work.
24+29+48
101
Hope this helps
There is a formula for Sum of interior angles of a polygon:

This figure has 7 sides, n = 7

Add up all the given angles,
Subtract from 900,
This will give you value of x.