Step-by-step explanation:
N=km
72=k×48
72=48k
k=72/48
k=1.5
N=1.5m
N=1.5×144
N=216
Given that ∠B ≅ ∠C.
to prove that the sides AB = AC
This can be done by the method of contradiction.
If possible let AB
=AC
Then either AB>AC or AB<AC
Case i: If AB>AC, then by triangle axiom, Angle C > angle B.
But since angle C = angle B, we get AB cannot be greater than AC
Case ii: If AB<AC, then by triangle axiom, Angle C < angle B.
But since angle C = angle B, we get AB cannot be less than AC
Conclusion:
Since AB cannot be greater than AC nor less than AC, we have only one possibility. that is AB =AC
Hence if angle B = angle C it follows that
AB = AC, and AB ≅ AC.
The formula for finding the volume of a sphere is 
If 40mm is the radius of the sphere, the volume will be about
mm.
Answer:
13 students
Step-by-step explanation:
4 plus 9 = 13