Find tha perimeter of a square with area 400cm2?Please answer
2 answers:
80 cm is the perimeter of the square
Answer:
80
Step-by-step explanation:
the formula for a squares area is = A
the area is 400 so to find a side all you need to do is find the square root of 400, and that is 20
Finally multiply 20 by 4 so find the perimeter
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Answer:
Step-by-step explanation:
((8 x 10) x 3) + ((9 x 8)/2) x2 = (80 x 3) + (72/2) x 2
= 240 + (36 x 2)
= 240 + 72
= 312
Addition is needed because of the subtraction sign.