Area and Perimeter of a circle with a diameter of 13 cm?

Step-by-step explanation:

P=(3.14)(d)                          diameter divided by 2 equals radius

P=(3.14)(13)

P=40.82

A=(3.14)(6.5)(6.5)

A=(3.14)(42.25)

A=132.665

Area = 132.73

Perimeter/Circumference = 40.84

Step-by-step explanation:

Formula for calculation Area with Diameter - (π/4) x D^2

Formula for calculation Circumference with Diameter - 2π

D = Diameter

π = Pi or 3.14...

We would round all numbers to the nearest hundredth if they have one.

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions