30.
हा ZURS का माग पपाएगा.
(A) 158 (B) 1559 (C) 156° (D) 157°
18 सेमी० और 12 सेमी० विमाओं वाले एक आयत को एक ऐसे
समचतुर्भुज के रूप में परविर्तिद किया जाता है, जिसका परिमाप आयत
के परिमाप के बराबर हो तथा एक कोण 120° हो। इस समचतुर्भुज
का सेमी०2 में क्षेत्रफल ज्ञात कीजिए :
7
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Answer:
Chemical engineering is a branch of engineering which deals with the study of design and operation of chemical plants as well as methods of improving production. Chemical engineers develop economical commercial processes to convert raw material into useful products.
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