A circular pond of diameter 28m is surrounded by a path 7m wide.
a) Find the area of the path
b) Find the cost of constructing the path at the rate of 30$ per sq. m

Pls answer ASAP will make brainliest and 20 points I will give you

See below.

Step-by-step explanation:

(a). Radius of the pond R = 1/2 * 28 = 14m and the radius of the greater circle r = 14 + 7 = 21 m.

Area of the path = area of the greater circle - area of the pond

= π * r^2 -  π *R^2

= π * 21^2 -  π *14^2

=  769.69 m^2.

(b). Cost of the path

= area of the path * 30

=  $23,090.70

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation: