Given that the circle has a diameter of 20cm, calculate:
The circumference of the circle. leave answer in terms of π
calculate the area of the circle. leave answer in terms of π

The answer to your question is Circumference = 20π cm; Area = 100π cm

Step-by-step explanation:

Data

diameter = 20 cm

Circumference = ?

Area = ?

Process

1.- Write the formula of Circumference

Circumference = πd

-Substitution

Circumference = 20π

2.- Write the formula of area of a circle

Area of a circle = πr²

-Calculate the radius

radius = diameter/2

radius = 20/2

           = 10 cm

-Substitution

Area = (10)²π

-Result

Area = 100π

answer: the two figures are congruent.

step-by-step explanation: they're congruent because figure efgh is reflected across the x and y axis but it was also rotated.

hope it !

step-by-step explanation:

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