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Calculate the area and altitude of an equilateral triangle of side 18cm take root 3 is equal to 1.73

Posted by Kumkum Goel 6 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Nisha Kumari 6 years, 11 months ago

Area of equilateral triangle=root 3(side)sq÷4 =1.73×18×18÷4 =140.13 cm sq Area of triangle = 1/2×b×h 140.13 = 1/2×18×h 140.13 ×2÷18 = h 15.57 cm = h

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