Question

A rectangle is having the length 4cm and width 3 cm. Find the area of the triangle formed by drawing one diagonal using heron's formula

Answer 1

Step-by-step explanation:

length of diagonal is 5cm( by Pythagoras theorem)

P= 12cm

so, semi perimeter (S)= 12/2 =6

°.° formula isA= √ S(S-a)(S-b)(S-c)

here , let a = 5 cm b= 4cm and c= 3 cm

therefore, a= √ 6×1×2×3

a = √36

i.e a= 6 sq.cm