6 cars are racing. In how many ways can first, second and third places be awarded?
2 answers:
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9514 1404 393
Answer:
153 square units
Step-by-step explanation:
The figure is drawn in the attachment with some lengths and points labeled.
The figure can be considered to have an area that is the sum of the areas of rectangle ABFE and triangle FGH, with the area of triangle BCD subtracted.
That area is ...
A = area(ABFE) +area(FGH) -area(BCD)
= (15)(9) +(1/2)(9)(6) -(1/2)(6)(3)
= 135 +27 -9 = 153 . . . square units
Answer:
52
Step-by-step explanation:
The total shaded are will be the area of big circle - not shaded circle + little shaded circle.
The are of big shaded circle: So, A=
(8^2)= 64
The are of not shaded circle: So, A=
(4^2)= 16
The are of little shaded cirlce: So, A=
(2^2)= 4
64 - 16
+ 4
= 52