Q. 75.0( 1 Vote )

# (1) From the measures given in the figure alongside, find the area of Δ ABC.(2) Using Pythagoras’ theorem find the length of side AC.(3) Find the area of Δ ABC using Heron’s formula. (1) Given:

AB = 12 cm

BC = 5cm

Area of Δ ABC = Area of Δ ABC = 30 sq cm

(2) According to pythagoras’ theorem:

AB2 + BC2 = AC2

AC2 = 122 + 52

AC = 13 cm

(3) Length of one side of the triangle (a) = 5 cm

Length of second side of the triangle(b) = 12 cm

Length of third side of the triangle (c) = 13 cm

Semi perimeter (s) = According to Heron’s formula

Area of the triangle = √(s(s-a)(s-b)(s-c))

Area of the triangle = 30 sq cm

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos  Area of Polygons41 mins  Quiz | Visualising Solid Shapes36 mins  Lets Roll Around a Circle51 mins  NCERT | Surface Area of Solid Shapes39 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation view all courses 