Ayah akan membuat sebuah kolam ikan hias. Kolam tersebut berbentuk lingkaran dengan panjang diameter 80 cm, luas tanah yang di perlukan untuk membuat kolam adalah??

Question

asked May 3, 2021 101k views

1 Answer

Matheus Gontijo · Answer 1 · 2021-05-06T23:17:02+0000

Answer:

$A=5024\ cm^2$

Explanation:

Father will make an ornamental fish pond. The pool is circular with a diameter of 80 cm, the area of land needed to make a pool is ??

The diameter of a circular pool, d = 80 cm

It means that,

Radius, r = d/2

r = 40 cm

We need to find the area of the land needed to make a pool. The area of a circular path is given by :

$A=\pi r^2$

Put the values in the above formula.

$A=3.14* (40)^2\\\\A=5024\ cm^2$

So, it will require
$5024\ cm^2$ area of land to make a pool.