A model of a moon is spherical in shape.the model has a radius 21cm.find the surface area of the model
Mathematics
ScanSolve AI Answer
Step-by-step solution
4 stepsLet's find the surface area of the spherical model.
Write the formula for the surface area of a sphere.
Surface Area (A) = 4πr²
Substitute the given radius (r = 21 cm) into the formula.
A = 4 × π × (21 cm)²
Calculate the square of the radius and then multiply.
A = 4 × π × 441 cm²
A = 1764π cm²Calculate the numerical value (using π ≈ 3.14159).
A ≈ 1764 × 3.14159 cm²
A ≈ 5541.76 cm²The surface area of the model is approximately 5541.76 cm².
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