AB = 7.6 mm and BC = 8.7 mm.
Find the length of AC, giving your answer rounded to 1 DP.","type":1,"ranking":4,"skill_ranking_id":4937,"calc":true,"before_answer":"AC = ","after_answer":"mm","horizontal":0,"reversible_answers":false,"skill_id":499,"correct":3215,"incorrect":909,"skipped":625,"is_memory_quiz_multi_choice_question":0,"created_at":"2015-12-07 08:02:51","updated_at":"2016-09-17 03:32:02","deleted_at":null,"percentCorrect":"67","attempts":4749,"skill":{"id":499,"name":"Pythagoras (shorter side)","slug":"pythagoras-shorter-side","youtube_id":"MWf5ZEMqX80","video_duration":640,"description":"Learn how to work out any short side of a right angled triangle using Pythagoras' Theorem","sample_question":"Given that $a$ = 5 cm and $b$ = 4 cm, work out $x$.
","order":3,"average":66,"average_assessment_time":653,"data":null,"topic_id":44}}" class="Assessment__question" style="width: 760.469px; float: left; font-size: 1.3em; margin-top: -4px;">A, B & C form a triangle where∠BAC = 90°.
AB = 7.6 mm and BC = 8.7 mm.
Find the length of AC, giving your answer rounded to 1 DP.