Kalkulator Bulatan
Tahu satu ukuran bulatan? Masukkannya untuk mendapatkan jejari, diameter, lilitan dan luas.
Keputusan
Masukkan nilai dan tekan Kira untuk melihat keputusan.
Formula
Circumference is the distance around the circle.
Area is the space inside the circle.
Cara menggunakan kalkulator ini
- Choose which measurement you know and enter it.
- Press Calculate. Exact answers are given in terms of π, with decimals underneath.
Contoh berserta jalan kerja
A circle with radius 5
Diameter = 2 × 5 = 10.
Circumference = 2π × 5 = 10π ≈ 31.415927. Area = π × 5² = 25π ≈ 78.539816.
Soalan lazim
Why is the answer written with π?
π is irrational, so “25π” is the exact answer. The decimal below it is rounded.
What units should I use?
Any unit works. Lengths come out in the same unit; area comes out in that unit squared.