Question

please tell the answer l will make the brainlest​

Answer 1

Answer:

in b)? = 28- (5+4+9)

or, ? = 28-18

= 10 cm

in c) ? = 49-(28+7+7)

=49-42

=7 cm

Answer 2

( b ) Perimeter = Sum of all sides

28 cm = 4 cm + 5 cm + 9 cm + x cm

28 cm = 18 cm + x cm

28 cm - 18 cm = x cm

10 cm = x cm

Therefore, the other side = 10 cm

( c ) Perimeter = Sum of all sides

49 cm = 7 cm + 7 cm + 28 cm + x cm

49 cm = 42 cm + x cm

49 cm - 42 cm = x cm

7 cm = x cm

Therefore, the other side = 7 cm

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