Question

The area of a triangle if a=51cm , b=70cm and angle C=41degree is​

Answer 1

Answer: Here 2s=(61+60+11)cm

Therefore s=

2

132

​

cm=66cm

Here a=61cm ,b=60cm  and c=11cm

Then by heron's formula,

Area of triangle PQR=

s(s−a)(s−b)(s−c)

​

                                  =

66(66−61)(66−60)(66−11)

​

                                  =

66×5×6×55

​

                                  =

108900

​

                                  =330cm

2

Step-by-step explanation: