Giving brainliest to first answer!! Determine the area of the composite figure to the nearest whole number.
A)9 ft2
B)11 ft2
C)13 ft2
D)17 ft2

C

Step-by-step explanation:

3/4 * 4pi = 3pi

3pi + 4 =. 13

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step-by-step explanation:

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answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.