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Masteriza [31]
2 years ago
10

Which of the following is a perfect square? A. 18 B. 81 C. 50 D. 32

Mathematics
2 answers:
pantera1 [17]2 years ago
8 0
ANSWER-
The answer is 81 because 9x9 is 81
jeyben [28]2 years ago
7 0

Answer:81

Step-by-step explanation:

Because the square root of 81 is 9 which is a perfect square

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What is the volume of a hemisphere with a radius of 9.8 in, rounded to the nearest tenth of a cubic inch?​
pogonyaev

Answer:

the volume of the hemisphere is 1970.2 cubic inches.

Step-by-step explanation:

The given is,

                  Radius of hemisphere is 9.8 inches.

Step:1

                 Formula of volume of hemisphere is,

                             ..................(1)

                 Where,

                           r - Radius of hemisphere

Step:2

                 From the given,

                          r = 9.8 inches

                 Equation (1) becomes,

                             

                                                 =  

                                                 =                    

                                                 = (0.66666666)(3.1415)(942.192)  

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          Volume of hemisphere = 1971.23 cubic inches

Result:is 1970.2 cubic inches.

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Value of N: 24

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