alleryదీర్ఘచతురస్రం యొక్క పొడవు పెరుగుతుంది 20% మరియు వెడల్పు 10%; ప్రాంతం మార్పు?
A12% పెరుగుదల
B8% పెరుగుదల
C8% తగ్గుదల
D10% పెరుగుదల
Answer & Solution
Correct answer: B. 8% పెరుగుదల
కొత్త ప్రాంతం పాత ప్రాంతం కంటే 1.20 × 0.90 = 1.08 రెట్లు, 8% పెరుగుదల.
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