Question

what will be the height of an equilateral triangle whose perimeter is 63m ?Find also the perimeter of triangle​

Answer 1

Answer:

Height of the equilateral triangle is 21√3/2 m. [BUT FRN U ALREADY GIVEN THE VALUE OF PERIMETER]

Step-by-step explanation:

Let x be the height of the eq. Δ                                                                                Perimeter of the Δ is given as 63m.                                                                    Then, length of one side of the Δ is 63/3 i.e. 21m                                             We have, height of the Δ, x= √[21²-(21/2)²] =√[441-(441/4)] =√[(1764-441)/4] =√[1323/4] =21√3/2