How does the area of a circle change if the radius is multiplied by a factor of n, where n is a whole number?

Zack notices that segment nm and segment pq are congruent in the image below: which step could him determine if δnmo ≅δpqr by sas? (5 points) segment mo ≅ segment qr segment on ≅ segment qp ∠ n ≅ ∠ r ∠ o ≅ ∠ q

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

Could someone me with this question i’ve been stuck on it for 20 minutes