Answer:
5000
Step-by-step explanation:
100 × 50
15+6
You would need to multiply 3*5 then 3*2 and then put 15+6
78
∠A + ∠B + ∠C = 180 { Angle sum property of triangle}
42 + ∠B + 60 = 180
∠B + 102 = 180
∠B = 180 - 102 = 78
In similar triangles, corresponding angles are congruent.
∠S ≅ ∠B
∠S = 78°
