= √64 + 9
= √73
2
2
= √ +
2
2
= √ (√73 ) + 3
= √82 cm
8.
T
T
D Q C
Q
R
P
A B P R
= √ −
2
2
×
2 =
2
= √ 12 − (4√2)
4√7×4
=
= √144 − 32 8√2
= √112 = √14 cm
= 4√7
= √ +
2
2
2
2
= √ (4√7) + 4
= √112 + 16
= √128
= 8√2
Jarak Dalam Ruang __ Matematika Wajib XII ____ 19