oops I left out some forrmating Look at this insted

[ Follow Ups ] [ Post Followup ] [ Calculus Message Board ] [ FAQ ]

Posted by Brad Paul on September 22, 2002 at 16:19:25:

In Reply to: Re: Precal functions posted by Brad Paul on September 22, 2002 at 16:17:20:

What is the area of the bottom of the box in terms of x?

A_bottom=x²

We do not know the height of the side of the box. But that is OK we
will just call it h and write our equations as if we knew h's value.

What is the surface area of the four sides of the box?

S_sides=4*x*h

What is the total surface ares of the open top box?

S_total=A_bottom + S_sides = x²+4*x*h

where S_total=20 sq. units.

Now what is the volume of the box?

V=x²*h

So we need to solve for h and plug it into our volume equation. I
suggest you do the algebra with just the letters then plug in the
numbers.

Follow Ups:

Post a Followup

Name:
E-Mail:

Subject:

Comments:
: What is the area of the bottom of the box in terms of x? : Abottom=x2 : We do not know the height of the side of the box. But that is OK we : will just call it h and write our equations as if we knew h's value. : What is the surface area of the four sides of the box? : Ssides=4*x*h : What is the total surface ares of the open top box? : Stotal=Abottom + Ssides = x2+4*x*h : where Stotal=20 sq. units. : Now what is the volume of the box? : V=x2*h : So we need to solve for h and plug it into our volume equation. I : suggest you do the algebra with just the letters then plug in the : numbers.

Optional Link URL:
Link Title:
Optional Image URL:

[ Follow Ups ] [ Post Followup ] [ Calculus Message Board ] [ FAQ ]