15.2 7 cg class 10 maths R Nishad sir

Описание: 7. एक बेलन के आधार का क्षेत्रफल 154 वर्ग सेमी. और ऊँचाई 10 सेमी. है। बेलन का आयतन ज्ञात कीजिए।
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