ABCD is a rectangle whose length and breadth are 26 cm and 15 cm
respectively. ADE is a triangle such that EFIAD and EF = 8 cm.
Calculate the area of the shaded portion.
Fr 8 cm
15 cm
26 cm
Answers
Given : ABCD is a rectangle whose length and breadth are 26 cm and 15 cm respectively.
ADE is a triangle such that EF ⊥ AD and EF = 8 cm.
To Find : Calculate the area of the shaded portion.
Solution:
area of the shaded portion. = area of rectangle ABCD - area of triangle ADE
area of rectangle ABCD = AB x BC
= 26 x 15
= 390 cm²
area of Δ ADE = (1/2) * AD * EF
AD = BC = 15 cm , EF = 8 cm
=> area of Δ ADE = (1/2) * 15 * 8
=> area of Δ ADE = 60 cm²
area of the shaded portion. = 390 -60 = 330 cm²
area of the shaded portion. is 330 cm²
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