Math, asked by unknown2277, 4 months ago

please solve!!!!!!!!!!

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Answers

Answered by rkcomp31

1

Answer:

DC=14 cm

Step-by-step explanation:

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Answered by sayaliyerme

0

Step-by-step explanation:

□ABCD

sideAB|| sideDC seg AE | seg DC

Given

l (AB) = 9cm
l (AE)=10cm
A (□ABCD)=115cm
l (DC)=?

A (□ABCD)= AB+BC+1/2AE

115cm2 = 9+10+1/2 AE

115cm2 = 9+5×AE

115cm2 = 14× AE

115cm2 = AE

14

8.2 =AE

AE = 8.2 cm2

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