Question

Tolong dijawab dengan caranya sekalian y.... no 13 dan 14
trimakasih

Answer 1

Space diagonal = √lenght² + wide² + high²
17 = √12² + 9² + h²
√289 = √144 + 81 + h²
√289 = √225 + h²
h² = 289 - 225
h² = 64
h = 8 cm

v = lwh
v = 12 * 9 * 8
v = 864 cm³ ---> b.

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base area of cuboid = long * wide
112 = 14 * w
w = 112 / 14
w = 8 cm

surface area = 2lw + 2lh + 2wh
(=) 2(14)(8) + 2(14)(5) + 2(8)(5)
(=) 224 + 140 + 80
(=) 444 cm²