475,481 views
35 votes
35 votes
PLEASE HELP ME 20 POINTS FIR THE CORRECT ANSWER

PLEASE HELP ME 20 POINTS FIR THE CORRECT ANSWER-example-1
User Hokerie
by
2.7k points

1 Answer

19 votes
19 votes

Answer:

AC ≈ 11 cm

Explanation:

i used the pythagorean theorem twice . . .

1st was with ΔCED:

EC² + 7² = 8²

EC² = 64-49

EC = √15

2nd was with ΔAED:

AE² + 7² = 10²

AE² = 100-49

AE = √51

√51 + √15 ≈ 11

User Kalpesh Popat
by
2.4k points