Correct Answer: Option D

Explanation

By Pythagoras, PE\(^2\) = 12\(^2\) - 5\(^2\)

= 144 - 25 = 119

h = PE\(^2\) = √119 = 10.9 ≈ 11cm,

Area of 11gm = b x h

QR = b =(5 + 7)cm = 12cm

area = 12 x 11

= 132cm\(^2\)

• how long will it take for a 1.5A current to coat evenly a layer of copper 0.1mm thick on both... Answer this

  4 Answers   ·   Physics   ·   5 years ago
• Pulse of vein is it readily detectable? Answer this

  2 Answers   ·   Biology   ·   3 hours ago
• Metals that can be reduced from their oxides thermally? Answer this

  2 Answers   ·   Chemistry   ·   3 hours ago