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Mia made a pencil box in the shape of a right rectangular prism what's the surface area of the box 20cm,6cm,7cm

Mia Made A Pencil Box In The Shape Of A Right Rectangular Prism Whats The Surface Area Of The Box 20cm6cm7cm class=

Sagot :

1) Let's visualize it to better understand:

A right rectangular prism is made from

2 faces 6 x 7

4 faces 20 x 6

Since we have rectangles, we can write calculating the area of each rectangle.

S base = 2 (6x 7) ⇒ S base = 84 cm²

S faces = 2 (20 x 6) ⇒ S faces = 240 cm²

S faces = 2 (20 x 7) ⇒ S faces = 280 cm²

2) Then the total surface area

84+240+280=604 cm²

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