Respuesta :

Esther

Answer:

[tex]1.\ A=24\ ft^2[/tex]

[tex]2.\ A=36\ ft^2[/tex]

[tex]3.\ A=29.04\ cm^2[/tex]

[tex]4.\ A=1,624\ cm^2[/tex]

[tex]5.\ A=12.96\ cm^2[/tex]

[tex]6.\ A=28\ in^2[/tex]

What is the King of the Pencil Case?: The Ruler

Step-by-step explanation:

1. Surface area of a cube: [tex]6a^2\ a=edge[/tex]

[tex]A=6(2)^2\\A=6(4)\\A=24\ ft^2[/tex]

2. Lateral area of a rectangular prism: [tex]2 ( l + w ) h[/tex]

[tex]l=3\ ft\\w=1.5\ ft\\h=4\ ft[/tex]

[tex]A=2 ( l + w ) h\\A=2(3+1.5)4\\A=2*4=8\\A=8(3+1.5)\\A=8(4.5)\\A=36\ ft^2[/tex]

3. Surface area of a cube: [tex]6a^2\ a=edge[/tex]

[tex]A=6(2.2)^2\\A=6(4.84)\\A=29.04\ cm^2[/tex]

4. Surface area of a rectangular prism: [tex]2(lw + wh + hl)[/tex]

[tex]l=28\ cm\\w=14\ cm\\h=10\ cm[/tex]

[tex]A=2(lw) +2( wh) + 2(hl)\\A=2(28*14)+2(14*10)+2(10*28)\\A=784+280+560\\A=1,624\ cm^2[/tex]

5. Lateral area of a rectangular prism: [tex]2 ( l + w ) h[/tex]

[tex]l=1.8\ cm\\w=1.8\ cm\\h=1.8\ cm[/tex]

[tex]A=2 ( l + w ) h\\A=2(1.8+1.8)1.8\\A=2*1.8=3.6\\A=3.6(1.8+1.8)\\A=3.6(3.6)\\A=12.96\ cm^2[/tex]

6.  Surface area of a rectangular prism: [tex]2(lw + wh + hl)[/tex]

[tex]l=2\ cm\\w=1.5\ cm\\h=4\ cm[/tex]

[tex]A=2(lw) +2( wh) + 2(hl)\\A=2(1.5*2)+2(2*4)+2(4*1.5)\\A=6+16+12\\A=34\ in^2\\A=34-6\ [2(1.5*2)]\\A=28\ in^2[/tex]

Hope this helps!

1. A = 24 f12
2. A = 36 f12
3. A= 29.04 cm?
1. A = 1, 624 cm?
5. A = 12.96 cm?
6. A= 28 in?
What is the King of the Pencil Case?: The Ruler