It is the third one, you are correct!!!!:)
Wouldn't 4/5 be a fraction because 4/5 is not a whole number. its a part not a whole so its a fraction
Radian measure is given by dividing the length of an arc by the radius of a given circle. Such that an arc that subtends an angle of 1 radian to the center of a circle is equivalent to the radius of the circle.
Therefore; θ = s/r where θ is the angle subtended in radians, s is the length of the arc and r is the radius of the circle.
Hence; r = s/θ
= 12π ÷ (4π/7)
= 12 × (7/4)
= 21 inches
we must avoid the bracket
a,4(3-×)...........given
4×3-4×........distributive property r applied
12-4×...........simply equivalent equation
Step-by-step explanation:
that is it