125.7cm²
Step-by-step explanation:
Given parameters:
Slant height, L = 6cm
Base radius = 4cm
Unknown:
Total surface area = ?
Solution:
To find the total surface area, we use the expression;
Surface area = r² + rL
Now insert the parameters and solve
Surface area = r(r + L )
Surface area = x 4 (4 + 6) = 3.142 x 4 x 10 = 125.7cm²