How do i show the work to find the area of this composite figure. the answer is 81.8km i just don’t know how to show the work.

(area of the half-cirlce) + (area of the triange) + (area of the rectangle) + (area of biggest triangle) + (area of 2 congruent trianges)

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*