Question

Find the area of efg


A.
3.4 square meters
B.
5.2 square meters
C.
68.3 square meters
D.
68.9 square meters

Answer 1

What is efg?

Answer 2

I guess you know heron's formula?

Answer 3

use it.

Answer 4

no i dont know how to use it.

Answer 5

You know the formula?

Answer 6

no

Answer 7

Google it

Answer 8

https://wikimedia.org/api/rest_v1/media/math/render/svg/d138044bb9ed870dd9dc5c7c8a3c07ab1db1705d

Answer 9

s is the semi perimeter. a,b,c are the length of the three sides.

Answer 10

In case you are still confused, the similar cut marks on the sides indicate that they have equal length. So you know FG. Similar angle mark show that they are equal angles. Equal angles of a triangle have equal opp.sides. So you know FE. Now use the equation.

Answer 11

so its B?

Answer 12

welcome to os