The side length of an equilateral triangle is 10cm. Find the length of an altitude.
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Answered by
1
Answer:
perimeter =30
area=43.3
Step-by-step explanation:
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Answered by
2
Answer:
15cm
Step-by-step explanation:
Side of an equilateral triangle =10cm.
As we know sides of the equilateral triangle are to each other.
Triangle ABC,
(AD)power2=(AB)power2 + (AD)power2
=(10)square +(5)square
=100+125
=225
=√225
AD =15cm
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