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Calculate the area of the shaded portion. Take C/A = 22/7.

March 21, 2026Mathematics

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Answer

150 \mathrm{cm}^2

4 steps

The shaded region is a triangle with base $20\,\mathrm{cm}$ and perpendicular height $15\,\mathrm{cm}$ .
The formula for the area of a triangle is
$A = \frac{1}{2} \times \text{base} \times \text{height}.$
Substitute the given values into the formula.
$A = \frac{1}{2} \times 20\,\mathrm{cm} \times 15\,\mathrm{cm}.$
Calculate the product of base and height.
$20\,\mathrm{cm} \times 15\,\mathrm{cm} = 300\,\mathrm{cm}^2.$
Multiply by $\frac{1}{2}$ .
$A = \frac{1}{2} \times 300\,\mathrm{cm}^2 = 150\,\mathrm{cm}^2.$
150 cm^2

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