If cloth costs $₹ 10 / m^{2}$ then find the total cost to build a cloth pyramid of base edge 10 m and slant height 10 m.

₹ 3000

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₹ 4000

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₹ 1000

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₹ 2000

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Solution

The correct option is A
₹ 3000

Total surface area = $b a s e a r e a + 4 \times \frac{1}{2} \times b a s e e d g e \times s l a n t h e i g h t$

= $10 \times 10 + 4 \times \frac{1}{2} \times 10 \times 10 = 100 + 200 = 300 m^{2}$

Total money required = $10 \times 300 = ₹ 3000$

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