Question

What will be the answer??

Answer 1

Given  : Flower bed of size 6 m *  4 m . And expanded by digging 25 cm wide strip around it

To find : Area of enlarged flower bed

Increase in area

Solution:

Flower bed  = 6 m * 4 m    = 24  m²

25 cm Strip around all     ( 25 cm  =  0.25 m )    as  1 m = 100 cm

Size of enlarged flower bed  = 6 + 0.25 + 0.25    & 4 + 0.25 + 0.25

= 6.5  m  & 4.5 m

Area of enlarged flower bed  = 6.5 * 4.5    =  29.25  m²

Area of enlarged flower bed  = 29.25  m²

Increased area = 29.25 - 24    = 5.25  m²

Table top Area =( 5.2 - 0.24 - 0.24 )(4.8 - 0.24 - 0.24 ) = 4.72 * 4.32  = 20.3904 m²

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