Question

find the given problem

Answer 1

Step-by-step explanation:

Finding the unknowns (of right angled triangle)

(i) B = 20 cm , H = 40 cm

    A = 1/2 * B * H = 1/2 * 20 * 40 = 400 cm²

(ii) B = 5 feet, Area = 20 square feet

     Area = 1/2 * B * H

     H = 2*Area/B = 2*20/5 = 2*4 = 8 feet

(iii) H = 12 m , Area = 24 square m

      Area = 1/2* B*H

        B = 2*Area/H = 2*24/12 = 2*2 = 4 m