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
Step-by-step explanation:
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Answers & Comments
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: