Find the area of a circle whose circumference is 31.4 centimeters. approximate π as 3.14.

Area of circle is 78.5 cm²

Step-by-step explanation:

Given: circumference is 31.4 centimeters

We have to find the area of circle.

We know Circumference =

Also given circumference = 31.4

So, Substitute, to find the radius,

Divide both side by 2π, we have,

Also, Area of circle =

Substitute, , we have,

Area of circle =

Simplify, we get,

Area of circle =

Area of circle =

Put π = 3.14 , we get,

Area of circle = 78.5  centimeter²

Thus, Area of circle is 78.5 cm²

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

i believe that the slope of the line is -5

step-by-step explanation: