Question

A right has an area of 21 m(squared). The Dimensions of the triangle are increased by a scale factor of 4. What is the area of the new triangle?

Answer 1

@TheSmartOne

Answer 2

@jim_thompson5910

Answer 3

@waterineyes

Answer 4

Oh forgot the answer choices

Answer 5

42 m2
84 m2
168 m2
336 m2

Answer 6

Please give detailed answer showing how to do this

Answer 7

Okay lets say the base and height of the triangle are a and respectively. The area of the original triangle would be (a*b)/2
The area of the new triangle would be (4a*4b)/2 or )16*a*b)/2 but remember, (a*b)/2 is really 21 b/c it is the are of the smaller triangle. so you can substitute like so.

Area of new triangle= 16*21=336m^2

Answer 8

sorry made some spelling errors

Answer 9

tis ok thx