Problem:
The area of the patio of a relative's house is 20 square meters.
The width of the patio is 2 meters.
What is the length of the patio?
Solution:
The area is:
A = (w) * (l)
Where,
w: width
l: long
Clearing l we have:
l = A / w
Substituting values:
l = 20/2
l = 10 meters
Angle a is directly opposite from a 40 degree angle, so a=40. Then we can find b since the sum of the angles of all triangles is 180 and there is a right angle in there along with angle a:


Last, to find c we just notice that it is supplementary with an angle of measure 65, so:


So our angles are a=40, b=50, c=115.
Option b: 10 in, 18.5 in, 31.5 in.
Explanation:
The three sides of a triangle are
and 
The perimeter of the triangle is
.
Since, Perimeter = all sides of the triangle
Let us add all the three sides to determine the length of each side.

Substituting the value of Perimeter and simplifying, we get,

Substituting
in the three sides of the triangle
and
, we get,



Thus, the lengths of each side are 10 in, 18.5 in, 31.5 in.
Answer:
150
Step-by-step explanation:
A=B*H/2
A=15*20/2
A=300/2
A=150
Ignore the hypotenuse btw