Mathematics
26.05.2020 19:55
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Ineed to know how to do this and step by step.
Ineed to know how to do this and step by step.
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briannaalvarado256
4,7(58 marks)
The formula for the area of a circle is PI r (square) or 3.14 * r^2 or 3.14 * r * r, all are the same thing. For 49, they give you the radius is 6.2 ft.
49.
3.14 * 6.2 * 6.2 = 120.7 ft(squared)
50.
diameter = 11 yards
Means: Radius = 5.5 yards (radius is half of a diameter)
3.14 * 5.5 * 5.5 = 94.99 yards ft(squared)
Now just round these values to the nearest tenth if not done so already. 94.99 will be 95.0 rounded to the nearest tenth.
KaliBratz
4,9(51 marks)
Well fo the first one the formula is πr^2. so this is what we will do:
πr^2
3.14x6.2^2
3.14x38.44
120.7
πr^2
3.14x5.5^2
3.14x30.25
95
πr^2
3.14x6.2^2
3.14x38.44
120.7
πr^2
3.14x5.5^2
3.14x30.25
95
brmoen1392
5,0(22 marks)
A + b = 144
a - b = 81
add
2a = 225
a = 225/2
a = 112.50
a - b = 81
112.50 - b= 81
-b = 81 - 112.50
-b = -31.50
b = 31.50
so ur numbers are : 112.50 and 31.50
a - b = 81
add
2a = 225
a = 225/2
a = 112.50
a - b = 81
112.50 - b= 81
-b = 81 - 112.50
-b = -31.50
b = 31.50
so ur numbers are : 112.50 and 31.50
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