East Malaysia is 50% bigger than Peninsular Malaysia at , comparable with South Dakota or Great Britain. East Malaysia contains the five highest mountains in Malaysia, the highest being Mount Kinabalu at 4095 m, which is also the highest mountain in Borneo and the 10th highest mountain peak in Southeast Asia. It also contains the two longest rivers in Malaysia – Rajang River and Kinabatangan River. Banggi Island in Sabah and Bruit Island in Sarawak are the two largest islands that are located entirely within Malaysia. The largest island is Borneo, which is shared with Indonesia and Brunei. The second largest island
Languages of Brunei specified, it is generally assumed to be a variety of Standard Malay that is similar to the standard varieties promoted in Malaysia and Indonesia. In fact, the use of Standard Malay and Brunei Malay can be described under the concept of diglossia, with Standard Malay taking the H(igh) role and being used in formal domains such as teaching and official speeches, while Brunei Malay functions in a L(ow) role, being used in informal domains such as between friends and in local shops. In terms of pronunciation, the Standard Malay of Brunei is rhotic, so there is an [r] at the