Question

A4. In trapezium ABCD, AB = 2 cm, BC = 10 cm, DC = 10 cm and AB is parallel to DC. Find the perimeter and area of the trapezium.
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Answer 1

Answer:

ᴛʀᴀᴘᴇᴢɪᴜᴍ ᴀʙᴄᴅ ɪs ᴅʀᴀᴡɴ ɪɴ ғɪɢᴜʀᴇ

ᴀᴇ = ( 18 - 12)ᴄᴍ = 6ᴄᴍ

∆ ᴀᴇᴅ ɪs ᴀ ʀɪɢʜᴛ - ᴀɴɢʟᴇᴅ ∆

$ᴛʜᴇʀᴇғᴏʀᴇ \: (ᴀᴅ)² + (ᴇᴅ)² + (ᴀᴇ)²$

$(10) {}^{2} + h {}^{2} + {6}^{2}$

$h = \sqrt{100 - 36}$

$h = 8cm$

$ᴀrea \: of \: trapezium = \frac{1}{2} \times sum \: of \: parallel \: sides \times distance \: betweenthem$

$\frac{1}{2} \times (18 + 12) \times 8$

$\frac{1}{2} \times \: 30 \times 8$

$30 \times 4 = 120$

ᴘʟᴇᴀsᴇ ᴍᴀʀᴋ ᴀs ʙʀᴀɪɴʟɪsᴇᴛ

Answer 2

Answer:

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