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← Mathematics – Grade 8
CLASS 8 · LEARNING KNOWLEDGE

Prisms and solids

How it works

A prism has two parallel, congruent bases. The volume is base area times perpendicular height. The lateral surface area is base perimeter times height.

Note
V=G·h; O=2G+U_G·h.

An example

A prism has a triangular base with base length g=7 cm and height 8 cm. The prism height is 5 cm. Calculate the volume. Give the result in cm³.

G=7·8:2. V=G·5. Result: 140 cm³.

Try it yourself now

50 Exercises · three difficulty levels · selection and number input

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Own explanation and own practice exercises by AmyMath. Subject reference framework: KMK Educational Standards Mathematics ESA/MSA. The topic assignment may vary by federal state.