Six, 30/2= 15 (square centimeter)

Ten, 5+4+3= 12(dm)

Length: 24/4 * 65438+5/02 = 5/2 (Deutsche Mark)

Width: 24/4 * 65438+4/02 = 2 (decimeter)

Height: 3 = 2 of 24/4 * 12 (decimeter)

Surface area: (5*2/3*2/5*2+2*2/3) * 2 = 23.5 (square decimeter)

Volume: 5 * 2 * 3 = 15 (cubic decimeter)

Thirteen. (6/2)*(6/2)*(6/2)=27 (pieces)

6 * 6 * 6 * 2 = 432 (cubic centimeter)

Fifteen. 1)3. 14 * 1 * 15 = 47. 1(m)

2)47. 1* 1.2=56.52 (m2)

Seventeen, * * * ten cubes.

Volume: 5 * 5 * 5 * 10 = 1250 (cubic centimeter)

Surface area: 5 * 5 * 34 = 850 (square centimeter)