a round mirror has a circumference of 87.92 inches. calculate the area of the mirror. use 3.14 for pi. round answers to the nearest hundreth

Question

a round mirror has a circumference of 87.92 inches. calculate the area of the mirror. use 3.14 for pi. round answers to the nearest hundreth if necessary

in progress 0
Nguyệt Ánh 6 months 2021-08-19T19:17:20+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-08-19T19:18:51+00:00

    Answer:

    615.44 in²

    Step-by-step explanation:

    Use the circumference formula, C = 2\pir

    Plug in the circumference and pi to solve for the radius, r:

    C = 2\pir

    87.92 = 2(3.14)r

    87.92 = 6.28r

    14 = r

    Then, use the area formula, A = \pi

    A = 3.14(14)²

    A = 615.44 in²

    So, the area of the mirror is 615.44 in²

Leave an answer

Browse

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