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QThe hypotenuse of a right-angled triangle is 20 and the base is 10. What is its area?

ID: #5299 Area 263 views
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#5299Q ID
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AreaTopic
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  • A 52 meters ✔ ✖
  • B 58 meters ✔ ✖
  • C 68 meters ✔ ✖
  • D 60 meters ✔ ✖
Correct Answer: Option D

Explanation

 
The area of a right angled triangle = ½ * base * height

Base = 10, Hypotenuse = 20

Height2 = Hypotenuse2 - Base2 
          = 202 - 162
          = 400 - 256
Height2  = 144
Height  = 12

Area = ½ * base * height
           = ½ * 10 * 12
          = 60 meters
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