A toy in the shape of square pyramids has base edges 16 CM and slant height 10 CM. 500 of these are to be painted and the cost is 80 rupeese per square meters. what would be the total cost?
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Base edge of the square pyramid = 16 cm
Slant height of the square pyramid = Height of the triangle = 10 cm
Area of the square = (side)2 = (16 cm)2 = 256 cm2
Area of triangle =
Area of one square pyramid = Area of square + Area of four triangles
= (256 + 4 × 80) cm2
= 576 cm2
Area of 500 square pyramids = 576 × 500 cm2
= 288000 cm2
= 28.8 m2 (1 m2 = 10000 cm2)
Cost of painting for 1 square metre = Rs.80
∴ Total cost of painting 28.8 m2 area = Rs.80 × 28.8 = Rs.2304
Step-by-step explanation:
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