Calculate the area of a circle with a diameter of 10 centimetres

From the information we have the diameter of the circle is 10 cm.

Area of a circle is given by 1/4π d²

A = 1/4 π d²

π = 3.14

d² = 10² = 100

So we now calculate.

A =  1/4 ×  3.14 × 100

A = 0.25 × 3.14 ×100

A = 78.5 cm²

Using radius :

The radius of this circle is 10 ÷ 2 = 5

A = π r²

A = 3.14 × 5²

A = 3.14 ×25

A = 78.5 cm²

So we still get the same answer.

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.