Answer:
97.6 square cm
Step-by-step explanation:
We are given that
Perimeter of base=16 cm
Height of salt shaker,h=20 cm
Slant height of salt shaker,l=10.2 cm
Perimeter of base,P=4(length of side of base)
[tex]16=4a[/tex]
[tex]a=\frac{16}{4}=4 cm[/tex]
Surface area of square pyramid=[tex]a^2+2al[/tex]
Using the formula
Surface area of square pyramid=[tex]4^2+2\times 4\times 10.2[/tex]
Surface area of square pyramid=[tex]16+81.6[/tex]
Surface area of square pyramid=97.6 square cm
