Length of an altitude of an equilateral
triangle of side '2a' is *
.За cm
.√за сm
.√за/2 cm
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ʜᴇɴᴄᴇ, ᴛʜᴇ ʟᴇɴɢᴛʜ ᴏғ ᴛʜᴇ ᴀʟᴛɪᴛᴜᴅᴇ ᴏғ ᴀɴ ᴇϙᴜɪʟᴀᴛᴇʀᴀʟ ᴛʀɪᴀɴɢʟᴇ ᴏғ sɪᴅᴇ 2ᴀ ᴄᴍ ɪs √3ᴀ ᴄᴍ.
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