Question

question :-

If the Sides of a triangle are 19cm , 26cm and 21m respectively then find the area of a triangle by the heron's formula ?
​

Answer 1

Answer:

hope it helps

Step-by-step explanation:

S = 19+26+21/2 = 66/2 = 33

Area = √S(s-a) (s-b) (s-c)

Using this formula we will solve the problem

• √33(33-19) (33-26) (33-21)
• √33(14) (7) (12)
• √33(14) (84)
• √33(1176)
• √38808 = 196.9975

Answer 2

196.98 cm²

Step-by-step explanation:

semi perimeter( s ).= (19+26+21)÷2 = 33

Area of Triangle

$\sqrt{33(33 - 19)(33 - 26)(33 - 21)}$

$\sqrt{33 \times 14 \times7 \times 12 }$

$\sqrt{3 \times 11 \times 2 \times 7 \times 7 \times 2 \times 2 \times 3}$

$2 \times 3 \times 7\sqrt{11 \times 2}$

$42 \sqrt{22}$

44 × 4.69

196.98 cm²