Answer:
The area of the black portion = 219.752280681013 cm²
Step-by-step explanation:
<u><em>the canvas has the shape of a square </em></u>
<u><em>with sides of length 8×4 = 32 cm</em></u>
Then
<u>• The area of the canvas</u>
= 32²
= 1024 cm²
<u>•• The area of the four circles</u>
= 4×(π×8^2)
= 804.247719318987 cm²
<u>••• The area of the black portion</u>
= 1 024 - 804.247719318987
= 219.752280681013 cm²