Question

area of a circle is given by 9 pie x^2 -12 pie x+14 pie. find the radius of the circle when x=4cm​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

radius = ±10.488

explanation :

area = 9πx²-12πx+14π

π as common

area = π ( 9x²-12x+14 )

area of circle is πr²

πr² = π ( 9x²-12x+14 )

π to π cancel

r²=( 9x²-12x+14 )

by putting value of x is 4

r²=( 9*4²-12*4+14 )

r²= 110

r=√110

r= ± 10.488 cm

hope it help