Question

Someone please help me I’m really struggling I will give brainliest

Answer 1

Answer:

SA ≈ 1134 cm²

General Formulas and Concepts:

Math

• Pi π = 3.14...

Pre-Algebra

Order of Operations: BPEMDAS

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

• Left to Right

Geometry

• Radius: r = d/2
• Surface Area of a Sphere: SA = 4πr²

Step-by-step explanation:

Step 1: Define

d = 19 cm

Step 2: Find SA

1. Substitute [R]:                    r = 19 cm/2
2. Divide:                                r = 9.5 cm
3. Substitute [SAS]:               SA = 4π(9.5 cm)²
4. Exponents:                        SA = 4π(90.25 cm²)
5. Multiply:                             SA = 361π cm²
6. Multiply:                             SA = 1134.11 cm²
7. Round:                               SA ≈ 1134 cm²