If triangle def has a 90° angle at a vertex of e, which statements are true? check all that apply triangle def is an obtuse triangle the angle at vertex d is acute the angle of vertex f is obtuse triangle def is a right triangle the angle at vertex d is obtuse

B and D just took the quiz

Step-by-step explanation:

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

my answer got deleted but it's a

step-by-step explanation: