a toy is made with 7 equal cubes of side root7. six cubes are joined to six faces of a 7th cube find TSA of the toy
Answers
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Total surface area of the toy is
210 sq.units.
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Answer:
Total Surface Area of Toy is 210 unit²
Step-by-step explanation:
Given : Length of an edge of 7 equal Cubes.
To find: Surface Area of toy.
A toy is formed when 6 cubes joined to 6 faces of a 7th cube.
We get a toy in which all face of middle cube is hide by other. Also 6 cubes lost their one face which are joined to middle cube.
⇒ cubes just has 5 faces toward outside.
⇒ Surface Area of Toy = 6 × Surface area of 5 faces of cube
= 6 × 5a²
= 6 × 5 × (√7)²
= 6 × 5 × 7
= 210 unit²
Therefore, Total Surface Area of Toy is 210 unit²