The diameter of a circle is 8 inches. (a) find the area of the circle (b) find tye circumference if the circle

(A) 50.24 square inches

(B)25.14  is the circumference

Step-by-step explanation:

(A) Diameter of circle = 8 inches

so radius of circle = 4 inches

now area = π r^2

=3.14× 4×4

= 3.14×16

= 50.24 square inches (Ans)

(B)R a d i u s   o f   c i r c l e = 4

C i r c u m f e r e c e = 2 π r = 2 π ( 4 ) = 8 π

= 8 *22 /7 = 176 /7 = 25.14

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

51-50

step-by-step explanation: