Question

Find the area and height of equilateral triangle whose perimeter is 60 cm

Answer 1

Area of equilateral triangle = ( √3/4)× side²

∴  Area = ( √3/4) × 60 × 60

    Area of given triangle   = 900 √3 cm²

Also,

Area of Triangle = 1/2 (base) × height

∴ 900√3. = 1/2 × 60 × height

Height of triangle = 30√3 cm