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PLEASE CAN ANYBODY HELP ME ON THIS????? Determine the length of CD

(no links as answers)

A)

6.32 units

B)

9.17 units

C)

10.77 units

D)

3.74 units

PLEASE CAN ANYBODY HELP ME ON THIS Determine the length of CD no links as answers A 632 units B 917 units C 1077 units D 374 units class=
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Respuesta :

it’s d 3.74 units hope this help

Answer:

A. 6.32 units

Step-by-step explanation:

CA²+CB² = (10+4)² = 196 ...(1)

CA²-CD² = 4²         = 16    ...(2)

CB²-CD² = 10²        = 100  ...(3)

(2)+(3)   CA²+CB²-2CD² = 116  ...(4)

(1)-(4)   2CD² = 196-116 = 80

CD² = 40

CD = 6.32

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