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Elenna [48]
3 years ago
9

Please help me please​

Mathematics
2 answers:
Olegator [25]3 years ago
6 0

\huge \green{Answer}

\:  \tt → 94cm {}^{2}

\bf \: Given : \\ \tt Length(l) = 5cm \\  \tt \: breadth(b) = 4cm \\  \tt \: height(h) = 3cm \\  \\  \bf \: Apply \: formula : \\  \bf \tt \: Surface \:  \: area \: \:  of \:  \: a \:  \: cuboid \:  \\   \tt \: =  >2(lb + bh + hl) \\   \\  \tt =  > 2(5 \times 4 + 4 \times 3 + 3 \times 5) \\  \tt \:  =  > 2(47)cm \\  \\  \tt =  >  {94cm}^{2}

Ksenya-84 [330]3 years ago
5 0

Answer: 94cm squared

Step-by-step explanation:

Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

2(12) + 2(15) + 2(20)=

24 + 30 + 40 =

54 + 40=

94

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