Posted by Deborah on Thursday, November 8, 2012 at 2:50pm.
A right triangle has an area of 13 m2. The dimensions of the triangle are increased by a scale factor of 3. What is the area of the new triangle?
39 m2
169 m2
117 m2
142 m2
I think it is A...?

math Ms. Sue  Steve, Thursday, November 8, 2012 at 3:01pm
nope. If each dimension is scaled by three, the area is scaled by 3^2, so (C).
recall that the area
a = 1/2 bh
If b and h are replaced by 3b and 3h, then
new area
A = 1/2 (3b)(3h) = 1/2 9bh = 1/2 bh * 9, or 9a

math Ms. Sue  rage, Friday, December 7, 2012 at 1:34am
177

math Ms. Sue  happy, Wednesday, January 20, 2016 at 12:51pm
yaya its 177 :D
Answer This Question
Related Questions
 MATH Please help!  A right triangle has an area of 13^2. The dimensions of the ...
 Algebra 8th grade please help!!!!!!  A right triangle has an area of 13 m2. The...
 MATH  1. The sides of a square are increased by a scale factor of 6. The ...
 algebra, HELP!  9. The sides of a rectangle are increased by a scale factor of ...
 math  A right triangle has an area of 13 m2. The dimensions of the triangle are...
 math  A right triangle has an area of 13 m2. The dimensions of the triangle ...
 Algebra  A right triangle has an area of 24 ft^2 the demesions of the triangle ...
 Math algebra Help please  A right triangle has an area of 24 ft^2 the ...
 Math  Triangle A has an area of 19,00cm squared and similar triangle B has an ...
 math  a triangle has dimensions 3, 4, and 5. a similar triangle is drawn with a...
More Related Questions