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2 answers:
Answer:
849.24 cm²
Step-by-step explanation:
we know it is a cube so to find the surface area of each square you do
12x12=144 and there are 5 sides so 144x5=720
We know sides of the squares are 12 cm so half of that (6) would be the bottom of the triangle
Now using pythagorus you would do a²+b²=c²
15²+6²=c²
225+36=c²
√261=√c²
16.15=c this only half of one of the sides of the pyramid so you would times 16.15 by 8 to equal 129.24
now add 720+129.24=849.24 cm²
Answer:
386.38
Step-by-step explanation:
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I'm going to need more information before I can answer.
Step-by-step explanation:
m² -12 = m
m² = m + 12
m = 
Answer:
-4182
Step-by-step explanation:
(24-3)-44-4131-28 subtract the numbers in ( ) first
21-44-4131-28 calculate the difference ( subtract in order now)
Answer:
Step-by-step explanation:
1+3+4 = 8
480 / 8 = 60
60 x 1 = 60 (concrete)
60 x 3 = 180 (sand)
60 x 4 = 240 (gravel)
60:180:240
Answer:
3.65625 or rounded 3.7
Step-by-step explanation: