Answered

45 cm 7. 8 15 cm 80 cm P= P = 35cm 9. 17cm 10. 10 cm 25 cm 15 cm 15 cm P 11 P=​

45 Cm 7 8 15 Cm 80 Cm P P 35cm 9 17cm 10 10 Cm 25 Cm 15 Cm 15 Cm P 11 P class=

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Answer:

7. P = 2(l + w)

= 2(45cm + 15cm)

= 2(60cm)

P = 120cm

8. P = 4a

= 4(80cm)

P = 320cm

9. P = a + b + c

= 17cm + 10cm + 15cm

= 27cm + 15cm

P = 42cm

10. P = a + b + c + d

= 35cm + 25cm + 25cm + 15cm

= 60cm + 25cm + 15cm

= 85cm + 15cm

P = 100cm