Answer:
Perimeter:44.91
Area:123.5
Explanation:
Perimeter: Starting with the semi circle, the circle has a radius of 5, and pi*radius^2 = 2*pi*radius=pi*5*2=3.14*10 = 31.4
that is the circumference for a whole circle, so the semi circle is 31.4/2=15.7
the perimeter of the triangle is 7+10+ sqrt(7^2+10^2)= sqrt(49+100) = sqrt(149)=12.21
12.21+7+10+15.7=44.91
area: area of the triangle is 7*10=70 70/2 = 45
area of the semicircle is 5 squared * 3.14 which is 25*3.14 which is 78.5
45+78.5= 123.5