उस त्रिभुज का क्षेत्रफल ज्ञात कीजिए जिसकी दो भुजाएँ 18 cm और 10 cm हैं
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we know that
perimeter of triangle= sum of all side of a triangle
perimeter of triangle= 18 + 18 + 10= 46cm
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Answer:
perimeter of rectangle 18+18 +10=46
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