Answer:
X=7cm
Step-by-step explanation:
By Pythagorus Theorem,
AC²=AB²+BC²
20²=12²+BC²
400=144+BC²
400-144=BC²
256=BC²
16cm=BC
AD²=AB²+BD²
15²=12²+BD²
225=144+BD²
225-144=BD²
81=BD²
9cm=BD
X=16cm-9cm
=7cm
hi everyone sorry but i don't know the answer
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Answers & Comments
Answer:
X=7cm
Step-by-step explanation:
By Pythagorus Theorem,
AC²=AB²+BC²
20²=12²+BC²
400=144+BC²
400-144=BC²
256=BC²
16cm=BC
AD²=AB²+BD²
15²=12²+BD²
225=144+BD²
225-144=BD²
81=BD²
9cm=BD
X=16cm-9cm
=7cm
Answer:
hi everyone sorry but i don't know the answer