Answer:
6
Step-by-step explanation:
Pls mark brainliest.
Answer:
1. The measure of the remaining leg is 21\sqrt{3} units
2. The angle opposite the side with length 21 units measures 30°
Step-by-step explanation:
The Pythagorean theorem tells you the remaining side length is ...
√(42² -21²) = 21√3 . . . . . matches the first statement, discounts statements 3 and 5
The angle opposite the 21-unit leg can be found from ...
angle = arcsin(21/42) = 30° . . . . . matches the second statement, discounts statement 4.
The diagonal line is equal to

using pythagoras' theorem of

. This gives us a value of 51m for the diagonal line.
TOTAL; 51+24+45=120m of fencing
52 weeks in a year x 558 units per week x .66 cost of each unit= $19,150.56 a year