PERIMETER (SHAPES)
Pick a shape • enter dimensions • get perimeter
Circle uses circumference • NO SCROLL
SHAPE
RECT
Choose a shape to show the right fields
ROUNDING
2DP
Result rounding only
LENGTH
A
Enter a number
WIDTH
B
Enter a number
WORKING
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PERIMETER
READY
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SHAPE
RECT
Choose a shape to show the right fields
ROUNDING
2DP
Result rounding only
LENGTH
A
Enter a number
WIDTH
B
Enter a number
WORKING
—
—
—
—
—
PERIMETER
READY
—
PAGE 1/2
HOW TO USE
1) Choose a SHAPE
2) Enter the side lengths
3) Press SOLVE
4) Read the working + answer
RECTANGLE
P = 2(L + W)
Example: 2(8+5)=26
or 8+5+8+5
SQUARE
P = 4s
Example: 4×6 = 24
TRIANGLE
P = a + b + c
Enter three side lengths
Example: 3+4+5=12
CIRCLE
C = 2πr
or C = πd
Example: r=4 → 25.13
TRAPEZIUM / PARA
P = sum of all sides
Enter the 4 side lengths
If unknown, measure it
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