Question

Va rog sa ma ajutati!

Answer 1

11) 

12·10 = 120 (plăci)

120·120 = 14400 cm² = 1,44m² (suprafața)

16)

$\it\mathcal{A} = \dfrac{c_1\cdot c_2}{2} = \dfrac{6\cdot12}{2} = 6\cdot6=36cm^2$