Question

area of Triangle is 90 cm² and base is 15 cm. find its altitude.​

Answer 1

Answer:

Step-by-step explanation:

AREA OF TRIANGLE =  1/2BASE× ALTITUDE

SO,

       =  90 =  1/2×15×A

       = 90 =  15/2 ×A

       = 90 = 15A/2

      = 90×2 = 15A

      = 180= 15A

      = A = 180/15

      = A = 12

.:. ALTITUDE = 12

Answer 2

Answer:

Given,

Area of triangle = 90 cm²

Base of the triangle = 15 cm

Area of triangle of = 1/2 × b × h

                    90 cm²= 1/2 x 15 x h

                   90/15    =  1/2 x h

                        6       = 1/2 x h

                         h      = 6 x 2 = 12 cm

Therefore , the altitude of the triangle is 12 cm