Question

find the shaded area in the following figures ​

Answer 1

Answer:

Here, SR=SU+UR=10+10=20cm, QR=20cm

PQ=SR=20cm, PT=PS−TS=20−10cm

TS=10cm, SU=10cm, QR=20cm and UR=10cm

Area of shaded region =Area of square PQRS−Area of ΔQPT−Area of ΔTSU−Area of ΔUQR

=(SR×QR)−

2

1

×PQ×PT−

2

1

×ST×SU−

2

1

=20×20−

2

1

×20×10−

2

1

×10×10−

2

1

×20×10

=400−100−50−100=150cm

2

.