A spherical balloon has a circumference of 23 cm. What is the approximate surface area of the balloon to the nearest square centimeter? (1 point) 674 cm2 415 c
Mathematics
U2lraleDelvyn
Question
A spherical balloon has a circumference of 23 cm. What is the approximate surface area of the balloon to the nearest square centimeter? (1 point)
674 cm2
415 cm2
168 cm2
1,662 cm2
674 cm2
415 cm2
168 cm2
1,662 cm2
2 Answer

1. User Answers makaylatellez
168cm2
Let r cm be the radius of the balloon, then
2pi(r)=23=>r=23/(2pi)
The surface area=
4pi(r^2)=
4pi[23/2pi)]^2=
(23^2)/pi=168.386 cm^2
approximately. 
2. User Answers kjuli1766
The correct answer is 168 cm²
What is a sphere?
 A sphere is formed by rotating a circle about one of its diameters.
 A sphere is a 3dimensional figure.
How to find surface area of a sphere?
The surface area(A) of a sphere can be found by the formula,
A = 4πr², where r is the radius.
How to find the surface area of the baloon?
It is given,
A spherical balloon has a circumference of 23 cm
∴ 2πr = 23
⇒ r = 3.66 cm
∴Radius of the sphere is 3.66 cm
Surface area of the baloon is A = 4πr² = (4 x π x 3.66²) cm²= 168.38 cm²
∴ Surface area of the baloon is≈ 168 cm²
Find out more information about sphere area calculations here: https://brainly.com/question/1293273
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