Activity 1: Directions: Write TRUE if the statement is true and FALSE if the statement is false. 1. The formula in finding the area of a circle is derived from the area of a parallelogram

2. The area of a circle isπr²

3. The area of a circle is equal to pi divided by the square of the radius.

4. The diameter of a circle is equal to twice its radius.

5. The area of a circle whose radius is 2.1m² is 13.85m².

Please need answer​

Step-by-step explanation:

1.The formula in finding the area of a circle is derived from the area of a parallelogram. It is false.

2. The area of a circle is πr² where r is the radius of the circle. It is true.

3. The area of a circle is equal to pi divided by the square of the radius. It is false.

4. The diameter of a circle is equal to twice its radius i.e. d = 2r. It is true.

5. If r = 2.1 m

Area of circle, A =  πr²

= 3.14 (2.1)²

= 13.85 m²

Henc,e this is the required solution.

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

47 - 90 = 43

43 - 180 = x

x = 137