Question

find the area and perimeter of an equilateral triangle whose height is 21cm​

Answer 1

Answer:

AREA = 190.95CM²

PERIMETER =63 CM

Step-by-step explanation:

PERIMETER OF EQUILATERAL ∆ = 3A

3 X 21 = 63 CM

AREA OF EQUILATERAL ∆ = √3/4 a²

√3/4 × 21²

√3/4 X 441

441√3/4

190.95 CM²

HOPE THIS WAS HELPFUL

Answer 2

Answer:

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