The surface area of the rectangular prism is 724 sq.cm.
What is net?
"In geometry, a net is a two dimensional structure that can be folded to form a three-dimensional shape."
The formula to find the area of rectangular prism:
The area of a rectangular prism with length l, width w and height h,
A = 2 × [( w × l) + (h × l) + (h × w)]
For given situation,
If we join the each corner of the net, it will form a rectangular prism with height 10 cm, length 12 cm and width 11 cm.
Here, h = 10 cm, l = 12 cm, w = 11 cm
Using the formula of the surface area of rectangular prism,
⇒ A = 2 × [( 11 × 12) + (10 × 12) + (10 × 11)]
⇒ A = 2 × (132 + 120 + 110)
⇒ A = 2 × 362
⇒ A = 724 sq.cm.
Therefore, the surface area of the rectangular prism is 724 sq.cm.
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