Question

The radius of a circle is 2.12m .its area according to the rule of significant figure is

Answer 1

Answer:

The area of the circle is 14.11 m².

Explanation:

Given that,

The radius of the circle r = 2.12 m

We know that,

Area of the circle is defined as:

$A=\pi r^2$

$A=3.14\times(2.12)^2$

According to the rule of the significant figure is

$A=14.11\ m^2$

The area of the circle is $14.112 m^{2}$.

Hence, The area of the circle is 14.11 m².

Answer 2

Answer:

The area of the circle is 14.11 m².

Explanation:

The radius of the circle r = 2.12 m

Area of the circle is defined as:

A = πr²

A = 3.14 × (2.12)²

According to the rule of the significant figure is

A = 3.14 × 2.12 m × 2.12 m

A = 14.11 m²

The area of the circle is 14.11 m²

Hence, The area of the circle is 14.11 m².

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