Find the area of a circle having a radius of 9 cm

Question

Find the area of a circle having a radius of 9 cm

in progress 0
Diễm Thu 4 years 2021-07-17T11:12:57+00:00 2 Answers 3 views 0

Answers ( )

  1. minhkhoi
    0
    2021-07-17T11:14:44+00:00
    Reply

    Answer:

    81 pi cm^2

    or approximately 254.34 cm^2

    Step-by-step explanation:

    The area of a circle is given by

    A = pi r^2

    A = pi (9)^2

    A = 81 pi

    Using 3.14 as an approximation for pi

    A = 81 (3.14)

    A =254.34 cm^2

  2. minhkhang
    0
    2021-07-17T11:14:47+00:00
    Reply

    Answer:

    81pi cm^2

    Step-by-step explanation:

    formula : pi*r^2

    pi*9^2

    pi*81

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )