Question

What should be the paper weight

Answer 1

1.2 cm

Explanation:

Im so sorry if this is incorrect

Answer 2

6.25 cm

Explanation:

`\rho=(m)/(V) \\\\V_{\text{pyramid}}= A_{\text{base}}\cdot h \cdot (1)/(3) \\\\1.6=(400)/(V) \\\\V=120 \cdot h \cdot (1)/(3) \\\\1.6=(400)/(40h) \\\\1.6=(10)/(h) \\\\1.6h=10 \\\\h=(10)/(1.6)=6.25\text{ cm}`

Hope this helps!