4 ft
diameter =

Circumference
=
Area =

diameter (d)= 2r=2*4=8ft

Step-by-step explanation:

circumference =2πr

=2 *4*22/7

=25.14 ft

also

Area=πr^2

=4^2 *22/7

50 .28 sq ft

Diameter: 8ft

circumference: 25.12

area: 50.24 square feet

Step-by-step explanation:

radius is 4ft

Diameter is 8ft

circumference 2×pi×radius

2×3.14×4

25.12

area (pi)radius^2

3.14×(4)^2

3.14×(16)

50.24

50 square feet

(x3 + 6x2 + 2x - 6) • (x - 1)

step-by-step explanation:

polynomial long division :

3.2     polynomial long division

dividing :   x4+5x3-4x2-8x+6

                              ("dividend")

by         :     x-1     ("divisor")

dividend     x4   +   5x3   -   4x2   -   8x   +   6

- divisor   * x3     x4   -   x3            

remainder         6x3   -   4x2   -   8x   +   6

- divisor   * 6x2         6x3   -   6x2        

remainder             2x2   -   8x   +   6

- divisor   * 2x1             2x2   -   2x    

remainder               -   6x   +   6

- divisor   * -6x0               -   6x   +   6

remainder                     0

quotient :   x3+6x2+2x-6   remainder:   0