Answer:
a=9
b=9
c=18
Step-by-step explanation:
c(a+b)+a+b=36
2a+2b=36
a+b=18
c=18
To find the area of a circle, you do π × diameter (in this case 10). They have told you to use 3.142 as π, so you do 3.142 × 10 = 31.42. Because it's a semi-circle, you need to halve 31.42 to get 16.21, which is the answer
Answer:
a
Step-by-step explanation:
the graphic is step by step
Answer:
3 lines of symmetry
Step-by-step explanation:
the lines go through the vertices of the triangle
