Question

O piramida regulata are apotema de 12cm și perimetrul bazei de 40cm. Aria lateral este.....cm patrati

Answer 1

$\frac{12 \times 40}{2} = 240 {cm }^{2}$

Answer 2

$\it \mathcal{A}_{\ell} =\dfrac{\mathcal{P}_b\cdot a_p}{2}=\dfrac{40\cdot12}{2}=240cm^2$