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8 October, 22:38

A regular square pyramid has a base length of 6 cm. The slant height of the pyramid is 9 cm. What is the surface area of the regular pyramid?

a. 90 cm2

b. 120 cm2

c. 144 cm2

d. 252 cm2

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Answers (1)
  1. 9 October, 00:21
    0
    L = 6 cm

    h = 9 cm

    A = l*l + 4*1/2*l*h = 6*6 + 2*6*9 = 36 + 108 = 144 sq cm
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