Mensuration Practice Test 5

Question : 32 of 40

Marks: +1, -0

The length of each edge of regular tetrahedron is 12 cm. The area (in sq. cm) of the total surface of the tetrahedron is:

Solution:

Length of each edge of regular tetrahedron = 12 cm
Total surface area = 4

×√3/4 a^2

(12)^2 √3

144 √3 cm^2

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