Question
Bahasa Melayu
Rajah 1 menunjukkan sebuah bulatan berpusat $O$ dan berjejari $9$ cm. Dua jejari $OA$ dan $OB$ dilukis supaya sudut $AOB$ di pusat bulatan itu ialah $1.5$ rad. Kawasan berlorek ialah bahagian bulatan yang terletak di luar sektor $AOB$. Hitung luas kawasan berlorek itu, dalam $\text{cm}^2$, dan berikan jawapan betul kepada empat angka bererti. [Guna $\pi = 3.142$]
English
Diagram 1 shows a circle with centre $O$ and radius $9$ cm. Two radii $OA$ and $OB$ are drawn so that the angle $AOB$ at the centre is $1.5$ rad. The shaded region is the part of the circle lying outside the sector $AOB$. [Use $\pi = 3.142$] Calculate the area of the shaded region, in $\text{cm}^2$, and give your answer correct to four significant figures.
Tap to take a photo or choose an image
JPG or PNG acceptedWrite with Apple Pencil on iPad (or finger / mouse) — the AI reads your working and grades it.
Type your answer
Loading…
⌨ Math input▾
Modelled on Selangor trial · Kertas 1 · Q1
Grading your answer... please wait
Modelled on Selangor trial · Kertas 1 · Q1
Try it free — the AI marks 3 answers a day.
A free account marks 30 a day.
Sign up free →
📖 Input mode
Study the worked solution, then try one like it. Revealed questions aren't counted.
Back to practice mode