Posted by **Anonymous** on Monday, January 16, 2012 at 6:09pm.

A triangle has an area of 20 inches squared. Every dimension of the triangle is multiplied by a scale factor, and the new triangle has an area of 180 inches squared. What is the scale factor.

- algebra -
**Steve**, Tuesday, January 17, 2012 at 10:20am
if a rectangle (or any 2-dimensional figure) is scaled by a factor of n, then

length l becomes nl

width w becomes nw

area lw becomes (nl)(nw) = n^2(lw) = n^2 times the old area

For your rectangle, the new area is 9 times the old area, so the scale factor is √9 = 3

- algebra 1 -
**Shanelle**, Sunday, October 6, 2013 at 5:31pm
a triangle has an area of 20 inches squared. every dimension of the triangle is multiplied by a scale factor, and the new triangle has an area of 180 inches squared. what was the scale factor?

- algebra -
**gfdgf**, Friday, October 9, 2015 at 11:50pm
9

## Answer this Question

## Related Questions

- Algebra 1 - a triangle has an area of 20 inches squared. every dimension of the ...
- Math - Triangle A has an area of 19,00cm squared and similar triangle B has an ...
- geometry - a rectangle has an area of 48 inches squared every dimention of the ...
- algebra - A triangle has side lengths of 5 inches, 12 inches, and 15 inches. ...
- Pre-Algebra - A triangle is enlarged by a scale factor of 10/3. a) If the ...
- algebra, HELP! - 9. The sides of a rectangle are increased by a scale factor of ...
- pre algebra - the midpoints of each side of triangle NOT are connected to make a...
- Area of Triangle - Find the missing dimension of a triangle: height: 15 ft area...
- Algebra 8th grade please help!!!!!! - A right triangle has an area of 13 m2. The...
- math - A right triangle has an area of 13 m2. The dimensions of the triangle are...

More Related Questions