P = 2H + 2L
L = 6
P = 18
18 = 2H + 2*6
18 = 2H + 12
6 = 2H
H = 3 ft
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 
Answer:
10
Step-by-step explanation:
AB²=8²+6²
=64+36
=100
AB=10
Answer: The
part of fence is painted.
Explanation:
It is given that we have a 32-foot fence around a square garden. There are 4 equal sections. You paint 1/3 of one section of the fence.
Since the fence divided in 4 equal parts, therefore the value of one section in fraction is
.
After that we paint
of the one section.
Since one section is equal to
, therefore
of the one section
is,

Therefore, the
part of fence is painted.