Answer:
2 1/2
Step-by-step explanation:
The value of the expression is 188
<h3>
How to determine the value</h3>
Given the expression
= 
Expand the bracket
= 
We have
= 
The denominator becomes the multiplier, we have
= 47 × 4
= 188
Thus, the value of the expression is 188
Learn more about algebraic expression here:
brainly.com/question/723406
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sin(A) =
(side opposite angle-A in a right triangle)
divided by
(hypotenuse of the same triangle) .
cos(A) =
(side adjacent to angle-A in a right triangle)
divided by
(hypotenuse of the same triangle) .
According to the given data our trapezoid is consists of three equilateral triangles.
We can calculate the height of one triangle, which is at the same time height of the trapezoid, using Pythagorean theorem
h=√(13∧2-5∧2)= √(169-25)= √144=12
Formula for the area of the trapezoid is
A=(a+b)/2 * h= (20+10)/2*12= 15*12=180cm∧2
Good luck!!!
I think you forgot to add the rest of the question
