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Answer:
Correct option: first one -> 45°
Step-by-step explanation:
FC is a diameter, so the arc FBC measures 180°.
If we have that FBC = FB + BC, then we can find the value of BC:
FB + BC = 180
135 + BC = 180
BC = 45°
If we call the center of the circle 'O, we have that the central angle EOF and the central angle BOC are vertically opposite angles, so EOF = BOC.
The central angles have the same measure that the arcs they are related, so we have that:
angle BOC = arc BC = 45°
angle BOC = angle EOF
angle EOF = arc EF = 45°
Correct option: first one
Answer:
29+31+24+30+20+18+16= 168
how many numbers there are= 7
168/7= 1,176
The mean is= 1,176
Hope this helped
To find the surface area, we want to find the area of each side, then add them all up together:
Area of base=lw
A=(5)(5)
A=25 cm²
Area of triangle=1/2bh
A=(1/2)(5)(12.5)
A=31.25 cm²
Since the 4 triangles have the same area, we can multiply the area we found by 4 and then add the area of the square:
SA=(4)(31.25) + 25
SA=125+25
SA=150 cm²