Answer:
b= -1
Step-by-step explanation:
3b-1=b-3
2b - 1 = -3
<u>2</u>b = -2
= -1
Answer:
2.0
Step-by-step explanation:
Area of Shaded Region = Area of square – Area of circle
Area of square = 3×3 = 9
Area of circle = π×r² = π×1.5² ≈ 7.068
(radius of circle is half of the side length)
9–7.068≈2.0
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There are 4 faces on a triangular pyramid
so total surface area = 4 x area of each face = 4 x 66
= 264 sq mm
