Answer:
10 and 60
Step-by-step explanation:
hope this helps :)
Answer:
A≈1017.88 if r=18m or A≈254.47 if r=9
Step-by-step explanation:
A=Pi*r^2, plugging in 18 m or 9 m since lack of info but i assume you are giving 18m total length of circle, gives us answer.
A certain journey by train takes 5 hours at the speed of 45 km/h. What will be the speed of the train to complete the same journey in 3 hours?
Answer:
step-by-step explanation:
1. The Side Angle Side (SAS) similarity theorem states that:
If two sides of a triangle are proportional to 2 sides of another triangle, and the angles around each of these 2 pairs f sides are equal (congruent), then the triangles are similar.
2. That is, we notice the equivalent ratios:

so

then if m(I)=m(F)=60°, the triangles EFG and HIJ are similar, by SAS similarity theorem.