Question

1. What is the perimeter of an equilateral triangle whose altitude is 10 cm?
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Answer 1

Step-by-step explanation:

√3/2 side = 10

side = 20/√3 cm

perimeter = 3 * 20/√3

= 20√3 cm

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Answer 2

Answer:

altitude of an equilateral triangle = 10cm

√3 a/2 = 10

where a is side

√3a = 20

a = 20/√3

a = 20√3/3

perimeter of an equilateral triangle = 3a

= 3(20√3/3) = 20√3