What was Mia's first error? She confused the height and the diameter. She forgot to include pi as a factor in the volume expression. She applied the exponent before multiplying 17.5 and 47. She squared 17.5 instead of 35.

She forgot to include pi as a factor in the volume expression.

Step-by-step explanation:

The exact question is as follows :

Given - Mia is calculating the volume of the cylinder below using the following work.

A cylinder with height of 47 meters and diameter of 35 meters.

To find - What was Mia’s first error?

Solution -

Given that,

Diameter of cylinder = 35 centimeter

Height of cylinder = 47 centimeter

Now,

We know that,

Volume of cylinder, V = r²h

Also,

We know, Diameter = 2×Radius

⇒Radius = Diameter ÷ 2

              = 35 ÷ 2

              = 17.5

⇒Radius = 17.5

SO,

The volume becomes, V = (17.5)²(47)

                                         = (306.25)(47)

                                         = 14393.75

So,

The volume of the cylinder becomes 14393.75 m³

But

Mia calculated the Volume is 14393.75

By comparing with the actual Volume, we get

The Mia's first error is - She forgot to include pi as a factor in the volume expression.

both equations and proportions are better.