Question

find surface area of a sphere whose radius = 10.5 cm​

Answer 1

Answer:

A≈1385.44

Step-by-step explanation:

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Answer 2

Given :

⬤ Radius of Sphere is 10.5 cm.

To Find :

⬤ Surface Area of Sphere .

Formula Used :

$\bf[\:{Surface \: Area \: of \: Cylinder = 4\pi{r}^{2}}\:]$

• r = radius

Solution :

According to the Formula :-

4πr²

4 × 22/7 × 10.5 × 10.5

88 × 15 × 105/100

138600/100

1386

Therefore , Surface Area of Sphere is 1386 cm² .

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Related Formulas :-

• Surface Area of Sphere = 4πr²
• Volume of Sphere = 4/3πr³
• Surface Area of Cuboid = 2 (lb + bh + hl)
• Volume of Cuboid = l × b × h
• Curved Surface Area of Cuboid = 2 (l + b)h
• Surface Area of Cube = 6a²
• Volume of Cube = a³
• Curved Surface Area of Cube = 4a² .

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