happytohelp1 happytohelp1

19-04-2021
Mathematics

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PLEASE HELP ME 20 POINTS FIR THE CORRECT ANSWER

PLEASE HELP ME 20 POINTS FIR THE CORRECT ANSWER class=

Respuesta :

clarch19 clarch19

19-04-2021

Answer:

AC ≈ 11 cm

Step-by-step 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

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