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3 years ago

Anna cuts four identical circles from a square piece of black poster board as shown.

Mathematics

2 answers:

Dmitry [639]3 years ago

6 0

Answer:

(A)3.44 square feet

Step-by-step explanation:

Length of The Square = 4 feet

Area of the Square poster board = 4 X 4=16 Square Feet

In each of the circles,

Diameter = 2 Feet

Radius = 2/2 = 1 Feet

Area of a circle = $\pi r^2$

Area of 1 circle $=\pi*1^2=\pi ft^2$

Area of the 4 circles $=4*\pi=4\pi ft^2$

Therefore:

Area of the leftover Poster= Area of the Square- Area of the 4 Circles

$=16-4\pi\\=16-4*3.14\\=16-12.56\\=3.44 ft^2$

Elden [556K]3 years ago

4 0

Answer:

3.44 square feet

Step-by-step explanation:

Please kindly check the attached file for explanation and the picture of the poster board.

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3 years ago

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