A square pyramid and a cube have the same total surface area. The width of the cube is 8 centimeters. The base of the pyramid is
equal to base of the cube. What is the slant height of the square pyramid?
1 answer:
Answer:
Step-by-step explanation:
surface area of cube = 6×8² = 384 cm²
lateral area of pyramid = surface area of pyramid - base area
= 384 - 8²
= 320 cm²
area of triangular face = 320/4 = 80 = ½(base)(slant height) = ½(8)(slant height)
slant height = 20 cm
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