Question

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??​

Answer 1

`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.