Răspuns :
V = L x l x h = 4 x 3 x 5 = 12 x 5 = 60 cm²
At = 2(lxL + lxh + hxL) = 2(15 + 12 + 20) = 2x47 = 94 cm²
d = √L²+l²+h² = √16+9+25 = √50 = √2·5² = 5√2 cm
V = L x l x h = 4 x 3 x 5 = 12 x 5 = 60 cm²
At = 2(lxL + lxh + hxL) = 2(15 + 12 + 20) = 2x47 = 94 cm²
d = √L²+l²+h² = √16+9+25 = √50 = √2·5² = 5√2 cm