Answer:
Area of window=195sq inches
Step-by-step explanation:
Since, it is an isosceles trapezoid, then area of an isosceles triangle is given by: [tex]\frac{1}{2}(a+b)h[/tex], where a and b are the two parallel sides of the triangle and h is the height of an isosceles triangle.
Now, a= 10 inches and b= 3+3+10=16 inches and h=15 inches.
Therefore, Area of isosceles triangle= [tex]\frac{1}{2}(10+16)(15)[/tex]
=[tex]\frac{1}{2}(26)(15)[/tex]
= [tex]195 sq inches[/tex]
Therefore, area of an isosceles triangle= 195sq inches.
