In this figure,st//rq,ps=3cm and sr=4cm.find the ratio of the area of ∆pst to the areaof ∆prq
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area of ∆pst/area of ∆prq= (3/4)power2 = 9/16
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Answer:
9:49
Step-by-step explanation:
Given
ST || RQ
PS= 3 cm
SR = 4cm
Proof :--
ar(∆PST) /ar(∆PRQ) = (PS)²/(PR)²
ar(∆PST) /ar(∆PRQ) = 3²/(PS+SR)²
ar(∆PST) /ar(∆PRQ) = 9/(3+4)²= 9/7² = 9/49
Hence, the required ratio ar(∆PST) :ar(∆PRQ) = 9:49
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