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DIA [1.3K]
3 years ago
10

a semicircle has a diameter of 18 centimeters. what is its area? (use 3.14 for pi)a 1017.36 cm 2b 56.52 cm 2c 127.17cm 2d 113.04

cm 2
Mathematics
1 answer:
IgorC [24]3 years ago
8 0
Area of semicircle = 1/2 x pi x r^2; where r = d/2 = 18/2 = 9cm.
Area of semicircle = 1/2 x 3.14 x (9)^2 = 1/2 x 3.14 x 81 = 127.17 cm^2
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3 years ago
Helppppppppp pleaseeeeeee fasttttt
topjm [15]
I think it’s 104,974
Because PEMDAS,
so first deal with exponents and 3 to the fourth power is 81. 6 to the fourth power is 1,296.
Next in PEMDAS is multiplication and division, so 1,296 times 81 is 104,976. Then 4 divided by 2 is 2.
Finally comes subtraction, 104,976 minus 2 = 104,974
5 0
3 years ago
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Answer:

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Step-by-step explanation:

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