What is the surface area 5mm 5mm 5mm cube

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given