Question

To compare this year result with last year's result, teacher went to the class and collected this year number of distinctions from the students. For last year's number of distinctions, she opened the result register & wrote the required number of distinctions. The data collected by her from the students & register respectively, are examples of: (a) Primary data & Secondary data (b) Primary data & Raw data (c) Both Primary data (d) Secondary data and Primary data

suggest me a d p please guys​

Answer 1

Answer:

The total surface area of a hollow cylinder of internal radius 6cm and

height 5 cm is 616cm2. Taking R to be the external radius, write an

equation in R and solve it to , then the thickness of the metal is

Explanation:

Hoii

Sweet Mrng(◍•ᴗ•◍)❤

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Answer 2

ᴛʜᴇ ᴛᴏᴛᴀʟ ꜱᴜʀꜰᴀᴄᴇ ᴀʀᴇᴀ ᴏꜰ ᴀ ʜᴏʟʟᴏᴡ ᴄʏʟɪɴᴅᴇʀ ᴏꜰ ɪɴᴛᴇʀɴᴀʟ ʀᴀᴅɪᴜꜱ 6ᴄᴍ ᴀɴᴅ

ʜᴇɪɢʜᴛ 5 ᴄᴍ ɪꜱ 616ᴄᴍ2. ᴛᴀᴋɪɴɢ ʀ ᴛᴏ ʙᴇ ᴛʜᴇ ᴇxᴛᴇʀɴᴀʟ ʀᴀᴅɪᴜꜱ, ᴡʀɪᴛᴇ ᴀɴ

ᴇQᴜᴀᴛɪᴏɴ ɪɴ ʀ ᴀɴᴅ ꜱᴏʟᴠᴇ ɪᴛ ᴛᴏ , ᴛʜᴇɴ ᴛʜᴇ ᴛʜɪᴄᴋɴᴇꜱꜱ ᴏꜰ ᴛʜᴇ ᴍᴇᴛᴀʟ ɪs