Pl tell me how to do this it’s urgent 40 points ! i’ll mark even brainliest

B. 68 inches

Step-by-step explanation:

HJK

you know that HJ is 56, and JK is 2/9 × HJ.

2/9 × 56 = 12.4

you now know HJ and JK, so HK is the sum of those.

12.4 + 56 = 68.4

so HK ≅ 68 when you round the answer

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3

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