Answer:
This expression isn't factorable with rational numbers.
You need to find the surface area of the rectangular prism and the triangular prism and add them up to find the answer.
Rectangular prism:
SA=2(lw+wh+lh)
SA=2(437.5+406.25+1137.5)
SA=2(1981.25)
SA=3962.5 sq cm
Triangular prism:
SA=2(1/2bh)+3(slanted height)*w
SA=2(235.75)+3(293.75)
SA=471.5+881.75
SA=1352.75 sq cm
3962.5+1352.75=5315.25 sq cm
You just gotta put the greater number on top and Aline each number and multiply
Cross multiply: 60%/100% =21/x
X is the variable we are trying to find.
100*21=2,100
2,100/60
X =35
All together in the choir there are 35 members.
I hope this helps!
Ok so it would be x=29°
and y=93°