Roscoe traced around the bottom of a can to draw a circle. tell whether each statement about Roscoe 's circle is true. use 3.14 for pie

Answer with Step-by-step explanation:

a.If the circle has circumference of in,then it has a diameter of 3 in.

Circumference of circle=in

We know that

Circumference of circle=

Using the formula

in

Diameter of circle=in

It is false.

b.f the circle has diameter of 2 inches,then it has a circumference of 6.28 in.

Diameter,d=2 in

Circumference of circle=in

It is true.

c.If the circle has a circumference of in then it has an area square inches.

Circumference=in

in

Area of circle=

It is true.

d.If the circle has a circumference of in then it has an area square inches.

Circumference=in

Area of circle=

It is not true.

e.If the circle has a radius of 1.5 inches,then it has an area of 7.065 square inches.

Radius,r=1.5 in

Area of circle=

It is true.

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

11

step-by-step explanation:

32.50-7.50=25

225/25=11