Question

Kylie drew a circle with a diameter of 8 cm. Paige drew a circle with a radius of 3 cm. Approximately how much larger is the area of Kylie’s circle than the area of Paige’s circle? Use 3.14 for Pi and round to the nearest whole number.
A.22 centimeters squared
B.88 centimeters squared
C.173 centimeters squared
D. 351 centimeters squared

Answer 1

Answer:

(B)

Explanation:

here

circumference of a circle = 2πr

now

according to the above formula,

we can rearrange it as...

circumference = 2r × π

as we know that

π = 3.14 or 22/7

here

in every case π = 3.14 given

so

according to the above formula

condition B satisfy

because

multiplying radius times 2 = 2 × r or 2r

and multiplying the result by 3.14 i.e. the value of π

so,

we get

2r × π OR 2πr

HOPE YOU GOT IT..

Answer 2

Difference between area = 22 cm²

Explanation:

Given:

Diameter of Kylie's circle = 8 cm

Radius of Kylie's circle = 8 cm / 2 = 4 Cm

Radius of Paige's circle = 3 cm

Find:

Difference between area

Computation:

Area of a circle = πr²

Area of Kylie's circle =  3.14(4)²

Area of Kylie's circle = 50.24 cm²

Area of Paige's circle =  3.14(3)²

Area of Paige's circle = 28.26 cm²

Difference between area = 50.24 cm² - 28.26 cm²

Difference between area = 21.98 cm²

Difference between area = 22 cm²

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