Mohon bantuannya, terimakasih-!!!​​

Poin A.

PS = 12 cm

PQ = √QS² + 13²

= √64 + 144

= √208

= 4√13 cm

Poin B.

PQ² = QS × SR

208 = 8 × SR

SR = 208/8

= 26 cm

Poin C.

PR = √QR² – PQ²

= √(8+26)² + (4√13)²

= √1156 – 208

= √948

= 2√237 cm