4a*4a*4a = 64a3 cubic units
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4a square
4a + 1 - a =19, rewrite your question, 4a + -a + 1 =19, 3a + 1 =19, subtract 1 from each side 3a = 18, divide by 3, a =6
Perimeter of a square is given by 4a where 'a' is the side of square. Just put 64 equals to 4a which gives a=16
The answer ... usually called the "solution" ... is the number that 'a' must bein order for the statement to be true. There's only one such number.You said that [ 1 - 4a = 21 ].I would begin by adding ' 4a ' to each side of the equation:1 = 21 + 4aNow subtract 21 from each side:-20 = 4aFinally, divide each side by 4 :-5 = a
A=TTr2A=3.14 x 22A=3.14 x 4A=12.56Hope this helps