Question

C
42 cm
23. Find the perimeter and area of the
quadrilateral ABCD in which AB = 21 cm,
ZBAC = 90°, AC = 20 cm, CD = 42 cm and
AD = 34 cm.
20 cm a
34 cm
A 21 cm​

Answer 1

Answer:

AC = 20 cm , AB = 21 cm and ∠CAB = 90°. Perimeter = 21+29+42+34 = 126 cm. Now area of quadrilateral ABCD is equal to Area of ΔABC + Area of ΔCAD