1.7 - find perimeter, circumference, and area. perimeter: length around a shape. measured in u cm,...
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1.7 - Find Perimeter, Circumference, and Area
Perimeter: Length around a shape.
Measured in ucm, in, ft, yd
Area: Square units inside a shape.
Measured in u2
cm2, in2, ft2, yd2
1u1u2 1u
1u1u2 1u
1u1u2 1u
1u1u2 1u
1u1u2 1u
1u1u2 1u
Polygon Picture Perimeter Area
Square
s
sP 4 2sA
Polygon Picture Perimeter Area
Rectangle
w wA wP 22 bhA
Polygon Picture Perimeter Area
Triangle
b
a ch
b
a ch
cbaP bhA2
1
Polygon Picture Perimeter Area
Circled
Diameter = 2 radius
rC 2 2rA dC
1. Find the perimeter of the shaded figure. Show work for each problem. Don’t forget units!
Work: _______________
Perimeter: _____________
P = 4(8)
32in
1. Find the perimeter of the shaded figure. Show work for each problem. Don’t forget units!
Work: _______________
Perimeter: _____________
14 + 14 + 7 + 7
42ft
2. Find the area of the shaded figure. Show work for each problem, including formulas. Don’t forget units!
Formula: _____________
Area: __________________
A = s2
A = (8)2
64in2
2. Find the area of the shaded figure. Show work for each problem, including formulas. Don’t forget units!
Formula: _____________
Area: __________________
A = bh
A = (14)(7)
98ft2
3. Find the perimeter of the shaded figure. Show work for each problem. Don’t forget units!
Work: _______________
Perimeter: _____________
16 + 30 + 34
80in
3. Find the perimeter of the shaded figure. Show work for each problem. Don’t forget units!
Work: _______________
Perimeter: _____________
39 + 48 + 20
107cm
4. Find the area of the shaded figure. Show work for each problem, including formulas. Don’t forget units!
Formula: _____________
Area: __________________
bhA2
1
)16)(30(2
1A
240in2
4. Find the area of the shaded figure. Show work for each problem, including formulas. Don’t forget units!
Formula: _____________
Area: __________________360cm2
bhA2
1
)15)(48(2
1A
5. Find the circumference of the shaded figure. Show work for each problem, including formulas. Leave answers in terms of . Don’t forget units!
Formula: _____________
Area: __________________
C = 2r
C = 2(3)
6ft
5. Find the circumference of the shaded figure. Show work for each problem, including formulas. Leave answers in terms of . Don’t forget units!
Formula: _____________
Area: __________________
C = d
C = (16)
16m
6. Find the area of the shaded figure. Show work for each problem, including formulas. Leave answers in terms of . Don’t forget units!
Formula: _____________
Area: __________________
A = r2
A = (3)2
9ft2
6. Find the area of the shaded figure. Show work for each problem, including formulas. Leave answers in terms of . Don’t forget units!
Formula: _____________
Area: __________________
A = r2
A = (8)2
64m2
8 8