Question

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Answer 1

Answer:

The surface area of Rectangular prism is $358 \ cm^2$.

Step-by-step explanation:

Given:

Length of the rectangular prism = 7 cm

Width of the rectangular prism = 5 cm

Height of the rectangular prism = 12 cm

we need to find the surface area of rectangular prism.

Solution:

the surface area of rectangular prism is equal to 2 times sum of length times width and width times height and length times height.

framing in equation form we get;

the surface area of rectangular prism = $2(l\times w+w\times h+h\times l)$

the surface area of rectangular prism = $2(7\times5+5\times12+12\times7) = 2(35+60+84) = 2\times179 = 358\ cm^2$

Hence The surface area of Rectangular prism is $358 \ cm^2$.