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Alja [10]
3 years ago
9

Find the area of the shaded region

Mathematics
2 answers:
LiRa [457]3 years ago
7 0

Answer:

<h2>107 mm²</h2>

Step-by-step explanation:

The formula of an area of a rectangle:

A=l\cdot w

<em>l</em><em> - length</em>

<em>w</em><em> - width</em>

<em />

The area of ​​a given shaded region is equal to the area of ​​the whole rectangle, minus the area of ​​the small rectangle.

Area of the whole rectangle:

<em>l = 15mm, w = 9mm</em>

<em>A₁ = (15)(9) = 135 mm²</em>

Area of the small rectangle:

<em>l = 7mm, w = 4mm</em>

<em>A₂ = (7)(4) = 28 mm²</em>

<em></em>

Area of the shaded region:

<em>A = A₁ - A₂</em>

<em>A = 135 - 28 = 107 mm²</em>

Ratling [72]3 years ago
5 0

Answer:

107mm²

Step-by-step explanation:

The whole square:

9mm × 15mm = 135mm²

The white area:

7mm × 4mm = 28mm²

Now subtract the white area from the whole square:

135mm² - 28mm² = 107mm²

Shaded Area: 107mm²

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