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PLEASE HELP ! 15 POINTs!
ABCD is a trapezium
Calculate the perimeter of the trapezium
Give your answer correct to 3 significant figures

PLEASE HELP 15 POINTs ABCD is a trapezium Calculate the perimeter of the trapezium Give your answer correct to 3 significant figures class=

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thebecks

Answer:

Perimeter = 101.496 cm

Step-by-step explanation:

draw line from point C that is perpendicular to line AD. Call that point E.

tan 43° = 16.7/ED

0.9325 = 16.7/ED

ED = 17.909 cm

sin 43° = 16.7/CD

0.6820 = 16.7/CD

CD = 24.487 cm

Perimeter = AB + BC + CD + ED + AE

Perimeter = 16.7 + 21.2 + 24.487 + 17.909 + 21.2 = 101.496 cm

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