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Gregory has a rectangular prism with a length of 10 cm, a width of 3 cm, and a height of 8 cm.
What is the surface area of Gregory's rectangular prism?
134 cm²
240 cm²
268 cm²
486 cm²

Respuesta :

Answer:

268  cm²

Step-by-step explanation:

Surface Area of rectangular prism = 2(lw) + 2(wh) + 2(lh)

=2(10x3) + 2( 3x 8) + 2( (10x 8)  = 60 + 48 + 160 = 268 cm²

nuhulawal20

Given the values of the lengths, widths and heights of the rectangular prism, the area of the rectangular prism is 268cm².

Option C) is the correct answer.

What is a rectangular prism?

A rectangular prism is simply a three-dimensional solid shape which has six faces that are rectangles.

The area of a rectangular prism is expressed as;

A=2(wl + hl + hw)

Given that;

  • Height h = 8cm
  • Length l = 10cm
  • Width w = 3cm

Area A = ?

We substitute into our above equation;

A=2(wl + hl + hw)

A=2(3cm×10cm + 8cm×10cm + 8cm×3cm)

A=2(30cm + 80cm + 24cm)

A = 268cm²

Given the values of the lengths, widths and heights of the rectangular prism, the area of the rectangular prism is 268cm².

Option C) is the correct answer.

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