93. Perimeter = 34cm
94. Perimeter = 72. 27mm
95. Perimeter = 22in
96. Perimeter = 56m
97. Volume = 512 in³
98. Volume = 72 in³
99. Volume = 154 cm³
100. Volume = 3, 309. 42 mm³
How to determine the perimeter
93. Note that the diagram is a trapezium
Perimeter = a + b + c + d
a = 15 , b = 5 , c = 5 , d = 9
Perimeter = 15 + 5 + 5 + 9 = 34cm
94. Note that the diagram is a circle
Perimeter of a circle = 2 πr
Given diameter = 23mm
Radius = diameter/2
Radius = 23/ 2 = 11. 5mm
Perimeter = 2 × 3. 142 × 11. 5 = 72. 27 mm
95. Note that the shape is a rectangle
Perimeter of a rectangle = 2 (length + width)
Length = 5 in
width = 6 in
Perimeter = 2( 5 + 6)
Perimeter = 2 × 11 = 22 in
96. The shape is a rectangle
Perimeter of a rectangle = 2 (length + width)
Length = 10m , width = 19m
Perimeter = 2( 10+ 19) = 2 × 29 = 58m
97. Volume of a cube = side by power of 3
Volume = 8³
Volume = 512 cm³
98. Volume of a Cuboid = length × breadth × height
Volume = 3 × 2 × 12
Volume = 72 in³
99. Volume of a sphere = πr² [tex]\frac{h}{3}[/tex]
radius = 7cm , height = 3cm
Volume = [tex]\frac{22}{7}[/tex] × [tex]7^{2}[/tex] ×[tex]\frac{3}{3}[/tex]
Volume = [tex]22[/tex] × [tex]7[/tex] × [tex]1[/tex]
Volume = 154 cm³
100. Volume of a cone = πr²h
radius = 9mm, height = 13mm
Volume = [tex]\frac{22}{7}[/tex] × [tex]9[/tex] × 9 × 13
Volume = [tex]\frac{23166}{7}[/tex]
Volume = 3, 309. 42 mm³
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