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उस वर्ग का क्षेत्रफल ज्ञात कीजिए जिसकी भुजा $7$ cm है।

A$28$ cm²
B$42$ cm²
C$49$ cm²
D$56$ cm²
Answer & Solution
Correct answer: C. $49$ cm²
वर्ग का क्षेत्रफल $= \text{भुजा}^2 = 7^2 = 49$ cm²।
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