if the of an equilateraltriangles is 81under root 3cm2.find the height.
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Answer:9√3 cm
Step-by-step explanation:
81√3 cm²
√3/4 × a² = 81√3
=> a² = (81√3 × 4)/√3
=> a² = 324
=> a = √324
=> a = 18 cm
Height = √3/2 × a = (√3/2 × 18) cm = 9√3 cm
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