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2 years ago

I need help finding the surface area of this composite figure.

Mathematics

1 answer:

eduard2 years ago

6 0

The surface area of the Figure is 498 cm per square.

According to the statement

we have to find the surface area of the cuboid.

So, For this purpose, we know that the

Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape

And the formula become SA=2lw+2lh+2hw.

From the given information:

The length of the cuboid = 7cm

The width of the cuboid = 2cm

The height of the cuboid = 2cm

Use the formula which is

SA=2lw+2lh+2hw

Substitute the values in it

then

SA=2*7*2+2*7*2+2*2*2

SA=28+28+8

SA=64 cm per square.

And from another cuboid is :

The length of the cuboid = 7cm

The width of the cuboid = 7cm

The height of the cuboid = 12cm

Use the formula which is

SA=2lw+2lh+2hw

Substitute the values in it

then

SA=2*7*7+2*7*12+2*12*7

SA=98+168+168

SA= 434 cm per square.

Total area of figure = 434+64 = 498.

So, The surface area of the figure is 498 cm per square.

Learn more about cuboid here

brainly.com/question/46030

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