On perimeter and area of squares and rectangles
1. (a) The side of a square is 12 cm. Find (i) its area, (i) its perimeter, and (ii) the length of a
diagonal
perimeters
and (1) area.
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Step-by-step explanation:
area: (side)² =12²
=144cm²
perimeter = 4×side = 4×12
=48cm
diagonal =√2side=√2×12
=12√2
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