Tolong bantu plisssss#bingungbet

Tolong bantu plisssss#bingungbet

Jawaban:

4 m

Penjelasan dengan langkah-langkah:

luas kolam ikan = 1/4 π d²

$12.56 = frac{1}{4} times 3.14 times {d}^{2} \ 12.56 = frac{3.14}{4} times {d}^{2} \ 12.56 times frac{4}{3.14} = {d}^{2} \ 4 times 4 = {d}^{2} \ d= 4$

maka diameternya 4 m