Triangles abc and def are similar. the ratio of the side lengths in triangle abc to triangle def is 1: 3. if the area of triangle abc is 1 square unit, what is the area of triangle def?

The area of triangle DEF is 9 square units.

Step-by-step explanation:

It is given that triangle ABC and DEF are similar and the ratio of the side lengths in triangle ABC to triangle DEF is 1:3.

Let the length of their sides be x and x respectively.

If two triangles are similar then the ratio of their areas is equal to the square of the ratio of their sides.

Since triangle ABC and DEF are similar, therefore

Cancel out the common factors.

On cross multiplication, we get

Therefore the area of triangle DEF is 9 square units.

answer: 94

step-by-step explanation: 79+91+92+94+94 = 450 divided by 5 (since there are 5 number that are being added) = 90

c. 1,233 miles