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A rectangular cardbord has dimensions of 86.30 cm. and 34.82 cm. If a square wth a side of length 18.15 cm. was cut off from it, find the area of the cardboard that was left.

pls. answer po kailangan ko na po ngayon THANK YOU PO


Sagot :

The area of the whole rectangle:
A=lw
A=(86.3cm)(34.82cm)
[tex]A=3004.966cm^{2} [/tex]

The area of the square:
[tex]A=s^{2} [/tex]
[tex]A=(18.15)^{2} [/tex]
[tex]A=329.4225cm^{2} [/tex]

Subtract the area of the square that was cut from the area of the whole rectangle:
[tex]3004.966cm^{2}-329.4225^{2}=A(remaining)[/tex]
[tex]A=2675.5435cm^{2} [/tex]