Need a quick answer please

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Step-by-step explanation:

c) SAS

Step-by-step explanation:

In ΔABC and ΔADC:

AC is a shared side

BC = DC (given)

∠ACB = ∠ACD ( it is given that ∠ACD is 90°, meaning ∠ACB must be 90° since they are the angles on a straight line)

∴ ΔABC≅ΔADC by SAS test.

Hope this helps :)

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet

the answer is 8/21

hope this