Question

Someone please help!
I will give brainliest

Answer 1

Answer:

C) 0.9 m

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Equality Properties

Geometry

• Surface Area of a Sphere: SA = 4πr²

Step-by-step explanation:

Step 1: Define

SA = 10.1 m²

Step 2: Find Radius r

1. Substitute [SAS]:                    10.1 = 4πr²
2. Isolate r term:                         10.1/(4π) = r²
3. Isolate r:                                  √[10.1/(4π)] = r
4. Rewrite:                                   r = √[10.1/(4π)]
5. Evaluate:                                 r = 0.896511
6. Round:                                     r ≈ 0.9

Answer 2

Answer:

0.9

Step-by-step explanation:

4(pi)r²= 10.1

4 × (pi) × r² = 10.1

r² = 10.1 / (4×(pi) )

r² = 0.8037

Therefore, r= 0.8965

~ 0.9