Friday

July 25, 2014

July 25, 2014

Posted by **A.J** on Tuesday, April 8, 2014 at 9:03pm.

- Math - I don't know -
**Ms. Sue**, Tuesday, April 8, 2014 at 9:20pmSorry.

- Math (Please Help Ms. Sue) -
**Reiny**, Tuesday, April 8, 2014 at 9:27pmThe surface area of two similar solids is proportional to the square of their corresponding sides,

so the square of the "doubling" is 2^2 or 4

So the surface area is quadrupled

or

let the original dimensions be l , w, and h

surface area = 2lw + 2lh + 2 wh

= 2(lw + lh + wh)

new dimensions : 2l , 2w and 2h

new surface area

= 2((2l)(2w) + (2l)(2h) + 2(2w)(2h)

= 8( lw + lh + wh)

and 8( lw + lh + wh) is 4 times as large as 2(lw + lh + wh)

**Related Questions**

Math Please help me - A rectangular prism has the following dimensions. length: ...

math - A rectangular prism has a volume of 8 cubic yards. Assume the dimensions ...

7th Grade Math - A pentagonal prism has dimensions that are four times the ...

Math - A rectangular prism has a volume of 960cm. It's width, length, and ...

Geometry - A rectangular prism has a base that is 5 cm by 7 cm and a height of ...

Math - The surface area of a rectangular prism is 10.4 in2. What is the surface ...

Geometry - Please Help thanks _____________________ Two similar rectangular ...

Geometry - Please Help thanks _____________________ Two similar rectangular ...

Ms. sue can u help me - A rectangular prism has a volume of 48 cubic feet and ...

ms.sue help!!! (math ) - hi im doing surface area I wondering how do you get the...