Wooden prism painting

The kit contains wooden prisms of various shapes. One is 4-sided with the base of a rectangular trapezoid (base measures 15 cm and 27 cm), arms 16 cm and 20 cm. The other was a 3-sided prism with base dimensions a=20 cm, b=18 cm, vb=30 cm. Both prisms had a height of 10 cm paint.

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You need to know the following knowledge to solve this word math problem:

solid geometry

surface area
prism

planimetry

area of a shape
triangle
trapezoid

Units of physical quantities

area

Grade of the word problem

practice for 14 year olds
high school

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