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各位知識朋友 , 入黎幫我手 ar !!! ( 數學 F.1 ) (55)
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各位知識朋友 , 入黎幫我手 ar !!!我有幾條數學問題唔識 , 幫手解答 ar( 數學 F.1 )!!!!!!!!!!!!!!!1. The area of rectangle ABCD is 32 cm2 . The length of AB is twice that of AD. Find the lengths of AB and AD. 2. A solid rectangular iron block of 64 cm long , 27cm wide and 8 cm high is melted and recast into an iron cube . Find the... 顯示更多 各位知識朋友 , 入黎幫我手 ar !!! 我有幾條數學問題唔識 , 幫手解答 ar( 數學 F.1 )!!!!!!!!!!!!!!! 1. The area of rectangle ABCD is 32 cm2 . The length of AB is twice that of AD. Find the lengths of AB and AD. 2. A solid rectangular iron block of 64 cm long , 27cm wide and 8 cm high is melted and recast into an iron cube . Find the length of each of the iron cube.
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各位知識朋友 , 入黎幫我手 ar !!! ( 數學 F.1 ) (55)
發問:
各位知識朋友 , 入黎幫我手 ar !!!我有幾條數學問題唔識 , 幫手解答 ar( 數學 F.1 )!!!!!!!!!!!!!!!1. The area of rectangle ABCD is 32 cm2 . The length of AB is twice that of AD. Find the lengths of AB and AD. 2. A solid rectangular iron block of 64 cm long , 27cm wide and 8 cm high is melted and recast into an iron cube . Find the... 顯示更多 各位知識朋友 , 入黎幫我手 ar !!! 我有幾條數學問題唔識 , 幫手解答 ar( 數學 F.1 )!!!!!!!!!!!!!!! 1. The area of rectangle ABCD is 32 cm2 . The length of AB is twice that of AD. Find the lengths of AB and AD. 2. A solid rectangular iron block of 64 cm long , 27cm wide and 8 cm high is melted and recast into an iron cube . Find the length of each of the iron cube.
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1. Let the length of AB and AD be 2x cm and x cm rspectively AB*AD=The area of rectangle ABCD (2x)(x)=32 x^2=16 x=4 Therefore, the length of AB and AD be 8 cm and 4 cm rspectively 2. The volume of A solid rectangular iron block of 64 cm long , 27cm wide and 8 cm high =64*27*8 =13824cm^3 the length of each of the iro n cube =3√13824 =24cm其他解答:
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