Answer:
just memorize the numbers in pi, I know the first like 4 numbers. 3.1415
Step-by-step explanation:
it is used for calculating the area of circles.
Answer:
(A)
Length of DE = √17
EF = √18
DF = √17
(B) Slope of DE = 4
EF = 1
DF = 1/4
(C) Isosceles triangle.
Step-by-step explanation:
See attached image.
Using the properties of arcs and inscribed angles, B is 110/2=55.