Answer:
A= 81πm² or 254.47 m²
Step-by-step explanation:
Area = π x r²
π x 9m² (9x9)
<em>i'm not 100% sure this is correct so i'm sorry if it is wrong</em>
Answer:
Focus of a Parabola. A parabola is set of all points in a plane which are an equal distance away from a given point and given line. The point is called the focus of the parabola and the line is called the directrix. The focus lies on the axis of symmetry of the parabola.
Step-by-step explanation:
The answer to your question is A
Answer:
x = 13.6 in
Step-by-step explanation:
The arc x is calculated as
x = circumference of circle × fraction of circle
= 2πr ×
( cancel the 2π on numerator/ denominator )
= 17 × 0.8
= 13.6 in
Answer:
radius = 11
Step-by-step explanation:
The equation of a circle centred at the origin is
x² + y² = r² ( where r is the radius )
x² + y² = 121 ← is the equation of a circle centred at the origin
with r² = 121 , then
r =
= 11