The sides (in meters) of a box joining at origin are represented by vectors a= 4i, b= 2i + 3j and c= i+k. The surface area of the box is a) 20 m2 b) 26 m2 c) 36 m2 d) 40 m

Question

The sides (in meters) of a box joining at origin are represented by vectors a= 4i, b= 2i + 3j and c= i+k. The surface area of the box is a) 20 m2 b) 26 m2 c) 36 m2 d) 40 m

Vikas TU · Answer

Surface area for cuboid is: 2*(l.b + b.h + h.l) => here . is dot product. therfore, => 2*(8 + 2 + 4) =>2*(14) => 28 m^2

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The sides (in meters) of a box joining at origin are represented by vectors a= 4i, b= 2i + 3j and c= i+k. The surface area of the box is a) 20 m2 b) 26 m2 c) 36 m2 d) 40 m

The sides (in meters) of a box joining at origin are represented by vectors a= 4i, b= 2i + 3j and c= i+k. The surface area of the box is a) 20 m2 b) 26 m2 c) 36 m2 d) 40 m

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The sides (in meters) of a box joining at origin are represented by vectors a= 4i, b= 2i + 3j and c= i+k. The surface area of the box is a) 20 m2 b) 26 m2 c) 36 m2 d) 40 m

The sides (in meters) of a box joining at origin are represented by vectors a= 4i, b= 2i + 3j and c= i+k. The surface area of the box is a) 20 m2 b) 26 m2 c) 36 m2 d) 40 m

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