Answer:
7.7
Step-by-step explanation:
a ^2+b^2=c^2−2bccosA
l^2 = 5.9^2+7.1^2-2(5.9)(7.1)cos 72
i think that you are multiplying them so the answer is 3553.5
and if your adding it would be 122.1
Answer:
D,
Step-by-step explanation:
the volume of a sphere is 4/3πr^3
Answer:
QR and PS
Step-by-step explanation:
Those lines will never touch.