Given:
Width of rectangular backyard = feet
Length of rectangular backyard = feet
To find:
The perimeter of yard.
Solution:
Formula or perimeter of a rectangle is
Using this formula, the perimeter of the rectangular backyard is
Therefore, the perimeter of the rectangular backyard is feet. So,
feet fencing is needed.
Answer:a) a=22, b=11
b) m=7, n=
Step-by-step explanation:
You should use trigonometry ratios as required and then you should use pythagoras theorem
In a) cosine(30°)= base/hypotenuse,
where 11√3 is the base
"a" is hypotenuse and
"b" is perpendicular
from this you can find the value of perpendicular then you should use pythagoras theorem to find the value of hypotenuse
pythagoras theorem is
base²+perpendicular²= hypotenuse²
Same is applied on (b) right triangle as, sine(45°)=perpendicular/hypotenuse