<span>The total surface area is SA = 6 </span>×

;
SA = 6 ×

= 6 × 81 = 486

;
Answer:

Step-by-step explanation:
Length and width of the yard are
and
.

The angle of STV would be 140 degrees.
2.48 can be rounded pretty much any number between 2.45 to 2.5
<span />
Answer: a = -15
Step-by-step explanation:
3a + b = 9
b=54
3a + 54 = 9
3a = 9-54
3a= -45
<h3>

</h3>
- x + = -
<h2>a= -15</h2>