Can someone please help me

Question

asked Apr 8, 2020 112k views

1 Answer

Anup Shah · Answer 1 · 2020-04-12T19:38:30+0000

Answer:

Explanation:

Lateral Area:

We have four congruent triangles with base b = 16cm and height h = 12cm.

The formula of an area of a traingle:

$A_\triangle=(bh)/(2)$

Substitute:

$A_\triangle=((16)(12))/(2)=(8)(12)=96\ cm^2$

$L.A.=4A_\triangle=4(96)=384\ cm^2$

Surface Area:

S.A.=B+L.A.

In the base we have the square with side s = 16cm. The formula of an area of a square:

$A_\square=s^2$

Substitute:

$B=16^2=256\ cm^2$

$S.A.=256\ cm^2+384\ cm^2=640\ cm^2$