cubical box has each edge 10cm and another cuboidal box is 12.5cm long

1.	cubical box has each edge 10cm and another cuboidal box is 12.5cm long,10cm wide and 8cm high. Which box has the greater surface area and by how much?
Answer» (i) Lateral surface AREA of CUBE = 4edge 2 =4(10) 2 =400 lateral surface area of CUBOID =2H(l+b) 2×8(12.5+10) =16×22.5 =360 So, the lateral surface area of the cube is larger by (400−360=40)cm 2

cubical box has each edge 10cm and another cuboidal box is 12.5cm long,10cm wide and 8cm high. Which box has the greater surface area and by how much?

Answer»

(i) Lateral surface AREA of CUBE = 4edge

=4(10)

=400

lateral surface area of CUBOID =2H(l+b)

2×8(12.5+10)

=16×22.5

=360

So, the lateral surface area of the cube is larger by (400−360=40)cm

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cubical box has each edge 10cm and another cuboidal box is 12.5cm long,10cm wide and 8cm high. Which box has the greater surface area and by how much?

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