Question

LaShaundra is buying fence for two triangular sections of her garden.

How much fence would she need for ​ triangle DFG ​ ?



Enter your answer in the box.

ft

Answer 1

ABC to DFG so SF = 20/4 = 5
so DG = 7 x 5 = 35 ft

P of DFG = 20+25+35 = 80 ft

answer
80 ft

Answer 2

80 ft

Explanation:

We are given two similar triangles ABC and DFG

When two triangles are similar then the ratio of their corresponding sides are equal.

`(AB)/(DF)=(BC)/(FG)=(AC)/(DG)`

AB=4 ft

BC=5ft

AC=7 ft

DF=20 ft

FG=25 ft

`(4)/(20)=(5)/(25)=(7)/(DG)`

`(4)/(20)=(7)/(DG)`

`DG=(7* 20)/(4)=35 ft`

Perimeter of DFG=DF+FG+DG=20+25+35=80 ft

Hence, she would need fence for triangle DFG=80 ft