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An arrow-shaped (pentagon) signboard is made of a rectangle 20 cm by 12 cm with a triangle on top of base 20 cm and height 9 cm.
Find the total area of the signboard.

Class 8Area of PolygonsMensuration
  • A330 sq cm
  • B240 sq cm
  • C420 sq cm
  • D300 sq cm

Step-by-Step Solution

Rectangle = sq cm. Triangle = sq cm. Total = 240 + 90 = 330 sq cm.
Answer: A) 330 sq cm

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