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AB = 10π

Step-by-step explanation:

The length of the arc is calculated as

arc = circumference of circle × fraction of circle

      = 2πr ×

      = 2π × 12 × ← cancel 12 on numerator/ denominator, leaving

AB = 2π × 5 = 10π

The length of AB is 10π units .

Step-by-step explanation:

Firstly, you have to convert degrees into radian by using the formula :

Let θ = 150°

Next, you have to use the length of arc formula for radian where s is the length and r is the radius :

Let r = 12 units,

Let θ = (5/6)π rad,

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

80 the answer is 80

step-by-step explanation: