Question

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Answer 1

D. 75 ft

Explanation:

Line DE parallel to line CB makes triangle ADE similar to triangle ACB. This means corresponding sides are proportional:

DE/AD = CB/AC

DE = AD×CB/AC = (70 ft)×(225 ft)/(70 ft +140 ft) = (225 ft)/3

DE = 75 ft

The distance across the lake is 75 feet.