b) The area of the base of a rectangular pyramid is 85 cm”. If the area of each
triangular face along the length and br

1 thought on “<br />b) The area of the base of a rectangular pyramid is 85 cm”. If the area of each<br />triangular face along the length and br”

1. Step-by-step explanation:

   Area of base rectanglar pyramid =85sq.cm

   Area of triangular face = 1/2 x breadth x length

   =1/2 x 28 x 5

   =70sq. cm

   there are four triangle

   so area of four triangle =4 x 70

   280sq. cm

   total surface area = (280 + 85) sq.cm

   = 365sq .cm

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