A 12-ft-by-15-ft swimming pool has a 3-ft-wide no-slip surface around it. what is the outer perimeter of the no-slip surface?

Question

Ramiro Bean

Mathematics

2 August, 11:15

A 12-ft-by-15-ft swimming pool has a 3-ft-wide no-slip surface around it. what is the outer perimeter of the no-slip surface?

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Victoria Walls · Answer 1

see diagram

we see we doulbe the 3 to add

3*2=6

6+12=18

6+15=21

thelength and width of the surfface is 18 by 21

P=2 (L+W)

P=2 (21+18)

P=2 (39)

P=78

the perimiter is 78ft