6. The diagonal of a rectangular field i
60 metres more than the shorter side
If the longer side is 30 metres more
than the shorter side, find the sides of
the field.
(AS
Answers
ᴛʜᴇ ᴅɪᴀɢᴏɴᴀʟ ᴏғ ᴀ ʀᴇᴄᴛᴀɴɢᴜʟᴀʀ ғɪᴇʟᴅ ɪ
60 ᴍᴇᴛʀᴇs ᴍᴏʀᴇ ᴛʜᴀɴ ᴛʜᴇ sʜᴏʀᴛᴇʀ sɪᴅᴇ
ɪғ ᴛʜᴇ ʟᴏɴɢᴇʀ sɪᴅᴇ ɪs 30 ᴍᴇᴛʀᴇs ᴍᴏʀᴇ
ᴛʜᴀɴ ᴛʜᴇ sʜᴏʀᴛᴇʀ sɪᴅᴇ, ғɪɴᴅ ᴛʜᴇ sɪᴅᴇs ᴏғ
ᴛʜᴇ ғɪᴇʟᴅ.
lєt thє lєngth σf thє shσrtєr sídє вє х mєtrєs.
thє lєngth σf thє díαgσnαl= 60 + х mєtrєs
thє lєngth σf thє lσngєr sídє = 30 + х mєtrєs
αpplчíng pчthαgσrαs thєσrєm,
díαgσnαl² = sídє² + shσrtєr sídє²
(60+х)² = (30 + х)² + х²
3600 + 120х+х² = 900 + 60х + х² + х²
2700 + 60х - х² = 0
2700 + 90х - 30х - х² = 0
90(30 + х)- х(30 + х) = 0
х = 90,
shσrtєr sídє ís 90m, lσngєr sídє ís 90+30=120m
ᴛʜᴇ ᴅɪᴀɢᴏɴᴀʟ ᴏғ ᴀ ʀᴇᴄᴛᴀɴɢᴜʟᴀʀ ғɪᴇʟᴅ ɪ
60 ᴍᴇᴛʀᴇs ᴍᴏʀᴇ ᴛʜᴀɴ ᴛʜᴇ sʜᴏʀᴛᴇʀ sɪᴅᴇ
ɪғ ᴛʜᴇ ʟᴏɴɢᴇʀ sɪᴅᴇ ɪs 30 ᴍᴇᴛʀᴇs ᴍᴏʀᴇ
ᴛʜᴀɴ ᴛʜᴇ sʜᴏʀᴛᴇʀ sɪᴅᴇ, ғɪɴᴅ ᴛʜᴇ sɪᴅᴇs ᴏғ
ᴛʜᴇ ғɪᴇʟᴅ.
lєt thє lєngth σf thє shσrtєr sídє вє х mєtrєs.
thє lєngth σf thє díαgσnαl= 60 + х mєtrєs
thє lєngth σf thє lσngєr sídє = 30 + х mєtrєs
αpplчíng pчthαgσrαs thєσrєm,
díαgσnαl² = sídє² + shσrtєr sídє²
(60+х)² = (30 + х)² + х²
3600 + 120х+х² = 900 + 60х + х² + х²
2700 + 60х - х² = 0
2700 + 90х - 30х - х² = 0
90(30 + х)- х(30 + х) = 0
х = 90,
shσrtєr sídє ís 90m, lσngєr sídє ís 90+30=120m