Question

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.

• A. ₹ 3000
• B. ₹ 4000
• C. ₹ 1000
• D. ₹ 2000

Answer 1

The correct option is A

₹ 3000

Total surface area = $basearea+4\times \frac{1}{2}\times baseedge\times slantheight$

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

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