Question

If the dimensions of a rectangular prism are 3 cm , 4 cm, and 10 cm, then it’s surface area is

Answer 1

As Per Provided Information

Dimensions of rectangle prism are 3 cm , 4 cm and 10 cm .

We have been asked to determine it's surface area.

`\underline{\boxed{\bf \: Surface \: Area_((Rectangular \: Prism)) = 2(lw + hl + hw}}`

where,

w denote width

h denote height

l denote length

`\longrightarrow\sf \: Surface \: Area_((Rectangular \: Prism)) = \: 2(3 * 4 + 4 * 10 + 10 * 3) \\ \\ \\ \longrightarrow\sf \: Surface \: Area_((Rectangular \: Prism)) = \:2(12 + 40 + 30) \\ \\ \\ \longrightarrow\sf \: Surface \: Area_((Rectangular \: Prism)) = \:2(82) \\ \\ \\ \longrightarrow\sf \: Surface \: Area_((Rectangular \: Prism)) = \:164 \: {cm}^(2)`

Therefore,

• Surface area of rectangular prism is 164 cm².

Answer 2

Surface area of rectangular prism is 164cm²

Explanation:

Given :-

• Dimensions of rectangular prism is 3cm , 4cm, and 10cm

To find:-

• Surface area of rectangular prism

Solution:-

Surface area of rectangular prism :-

2(lb + bh + hl)

putting the known values ,

Surface Area = 2(3×4+4×10+10×3) cm²

Surface area = 2(12+40+30) cm³

Surface area = 164cm²