a food store has two stacks of rice weighing 26.3 kg each . what quantity of rice was sold during a day , of at the end of the d
1 answer:
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Answer: 131.1287 square mm (approx)
Step-by-step explanation:
The area of a triangle,
Where and
are adjacent sides and
is the include angle of these sides,
Here PR and QR are adjacent sides and ∠R is the included angle of these sides,
Thus, we can write,
,
and
,
Thus, the area of the triangle PQR,
