store owner decides to mark up all items by 30%. What is the selling price of an item that originally cost $10?
1 answer:
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Sphere
The surface area of the sphere is 80384 sq yd
Step-by-step explanation:
Given the ride goes around the widest circle of the sphere whose circumference is 502.40 yd.
The widest circle of the sphere is the plane contains the sphere's center
The circumference of the widest circle is where r is radius of the sphere.
The surface area of the sphere is defined as where r is radius of the sphere.
So 502.4 =
⇒502.4 = 2 × 3.14 × r
⇒ r = 502.4 ÷ (2 × 3.14)
⇒
Surface Area A =
⇒ A = 4 × 3.14 × (502.4 ÷ 6.28) × (502.4 ÷ 6.28)
⇒ A = 80384 sq yd
The surface area of the sphere is 80384 sq yd