allery20 m × 15 m आकाराच्या एका लॉनच्या सर्व बाजूंनी बाहेरून 2 m रुंदीचा रस्ता आहे. त्या रस्त्याचे क्षेत्रफळ किती?
A140 m²
B136 m²
C156 m²
D176 m²
Answer & Solution
Correct answer: C. 156 m²
बाहेरील आयताचे क्षेत्रफळ 24 x 19 = 456 m² असून, त्यातून लॉनचे क्षेत्रफळ 300 m² वजा केल्यास 156 m² शिल्लक राहते.
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