Question

Calculate the area of the shaded portion from the measurements given in the following
figure:
12 cm
x
20 cm
30 cm​

Answer 1

Answer:

Area of shade portion = area of rectangle - area of triangle

Step-by-step explanation:

area of rectangle = l*b

30*20

${600cm}^{2}$

area of triangle =

$\frac{1}{2} b \times h$

$\frac{1}{2} \times 20 \times 12$

10*12

${120cm}^{2}$

area of shade portion = 600-120

${480cm}^{2}$

Answer 2

Answer:

area of shaded portion = area of ABCD - area of Triangle DXA

Step-by-step explanation:

= 30 x 20

= 600 cm sq.

therefore , area of ABCD = 600 cm sq.

are of the triange = 1/2 base x height

                             = 1/2 x 20 x 12

                             =  1/2 x 240

                             = 120

area of saded portion = 600 - 120

                                     = 480 cm sq.