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RUDIKE [14]
3 years ago
10

Use either the square of a binomial or the

Mathematics
1 answer:
notsponge [240]3 years ago
4 0

Answer:

9. 2916 sq. cm

10. 864 sq. in

Step-by-step explanation:

9.)  54 cm * 54 cm = area of square

   (50 + 4)*(50 + 4) =  50*50 + 8*50 + 16

= 2500 + 400 +  16 = 2916 sq cm.

10.  24 in *  36 in. = area of rectangle

get:   (30 - 6)*(30 + 6) = 30^2- 6^2

= 900 - 36 = 864 sq. in.

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