1) The perimeter is the sum of the lengths of the straight edge (the diameter of the semicircle) and the length of the arc of the semicircle.
The circumference of a 4 ft circle is
π*diameter = π*4 ft ≈ 12.566 ft
The semicircle will have a length that is half that, 6.283 ft. When this length is added to the diameter, the perimeter is found to be
Perimeter = 4 ft + 6.283 ft ≈ 10.3 ft.
2) The area of a circle is given by the formula
A = (π/4)d²
For a diameter of 15 inches, the area is
A = (π/4)(15 in)² = 56.25π in²
A ≈ 176.7146 in²
The area of the circle is about 176.71 in².
Answer:
i only know it is c and e but dont know about a and b
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>XO = YO equal as radius, therefore</u>
∠YOZ is exterior angle of the triangle OXY and equal to sum of non-adjacent interior angles
Arc YZ is 108°
Correct option is B
Answer:
see below
Step-by-step explanation:
y = 5x - 31
y = mx + b
where m = slope
slope of a parallel line = 5
slope of a perpendicular line = - 1/5
Answer:
Step-by-step explanation:
hello :
p²+30p = p(p+30)
