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VMariaS [17]
3 years ago
7

TIME REMAINING

Mathematics
2 answers:
irinina [24]3 years ago
6 0

Answer:

C. 21 cm

Step-by-step explanation:

Just took the Unit Test on Edg (2020-2021)!!

Alex73 [517]3 years ago
5 0

Answer:

EF² = FA²+ EA²

20² = 12² + FA²

400 -144 = FA²

256 =FA²

16cm = FA

Now in Δ DAG

DG² = AG² + DA²

13² = 12 ²+ DA²

169 -144 = DA²

25 = DA²

5cm = DA

Then that means diagonal DF = DA + FA

= 5 + 16

= 21cm

Step-by-step explanation:

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