3. Find the area of each of the following figures
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Step-by-step explanation:
In ΔADE,
AE = 5 , ED = 9
area of ΔADE = 1/2 * Base * Height
= 1/2 * ED * AE
= 1/2 * 9 * 5
= 1/2 * 45
= 22.5 cm²
In ΔBCD,
BC = 3 , CD = 1.5
area of ΔBCD = 1/2 * Base * Height
= 1/2 * CD * BC
= 1/2 * 1.5 *3
= 2.25 cm²
area of quad. ABCDE = area of ΔADE + area of ΔBCD
= 22.5 cm² + 2.25 cm²
= 24.75 cm²
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