Question

7.
The perimeter of a rectangle is 128 cm. If its breadth is 20 cm. Then find its (i) Length
(ii) Area
8.
The marks out of 50. obtained by 30 students of a class in an examination are given below:​

Answer 1

Step-by-step explanation:

7) (i) Length = x cm

Then,

2(x+20)=128

→2x+40=128

→2x=128-40

→2x=88

→x=88/2

→x=44.

Then,the length of the rectangle is 44 cm.

Area = Length x Breadth

= 44cm x 20 cm

= 880 cm²

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And no.8, please give the question correctly.