Question

An electric pole , 21m high casts a shadow of 15m . Find the height of a tree casts a shadow of 20m under similar conditions.

Answer 1

Step-by-step explanation:

Height of an pole=21m

........... .. its shadow=15m

Let the height of the tree be x

........... .. its shadow =20m

so

$\frac{21}{15} \div \frac{x}{20} = 21 \times 20 = 15 \times x \\ x = \frac{420}{15} = 28$

so,height of the tree is 28 m.

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