A rectangle with sides of 3 cm and 4 cm was cut from a square with a side of 10 cm. Find the area of the remaining part.

Let us determine the area of the AВСD square.

Savsd = AB * AD = 18 * 10 = 100 cm2.

Determine the area of the cut off part of the square.

Svmnk = MН * KН = 3 * 4 = 12 cm2.

Let’s determine the area of the remaining part.

S = Savsd – Svmnk = 100 – 12 = 88 cm2.

Answer: The area of the remaining part is 88 cm2.



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