Thank you for your answers. Grade?Five

(960-8 * 58)/8 = 62m

5.16.5+8.7 = 25.2m,

16.5*2=33m，

( 16.5+25.2)*33/2=688.05m2，

688.05/9.5 = 6536.475 kg

Smart house:: 1, /link? URL = T9 YICG 3T64 _ 0QJJA0JUS 0x5i _ QZavdyspCSPsavt66Rofy4UOAUYL _ YSKWWT _ DRZZ87GNNV 8NLF SPX-R _ Think according to your own ideas.

2、 1992

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