Question

Q6) If each side of the square is 21 cm, then the area of
triangle OSR is

Answer 1

Answer:

ar(osr) = 1/2 × altitude × base

here altitude is side of the square and base als0

therefore by formula

ar(osr) = 1/2× 21×21

= 441/2

= 220.5

therefore the area is 220.5 cm2