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प्रश्न
PQRS is a rectangle in which PQ = 12cm and PS = 8cm. Calculate the area of ΔPRS.
उत्तर
Since PQRS is a rectangle, therefore PQ = SR.
SR = 12cm
PS = 8cm
ar(ΔPRS) = `(1)/(2) xx "base" xx "height"`
ar(ΔPRS) = `(1)/(2) xx "SR" xx "PS"`
ar(ΔPRS) = `(1)/(2) xx 12 xx 8`
ar(ΔPRS) = 48cm2.
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