Question

please tell step by step​

Answer 1

Answer:

• apply the Pythagoras law....I'm giving u the 1st example:

12²+PQ²=20²

thus, PQ= √20²-12²=√256=16.

Answer 2

Answer:

$h ^{2} = {p}^{2} + {b}^{2} \\ (20)^{2} = (p ) {}^{2} + ( {12)}^{2} \\ 400 = (p) ^{2} + 144 \\ 400 - 144 = {(p)}^{2} \\ 256 = {(p)}^{2} \\ p \: = 16$

$({h)}^{2} = {(p)}^{2} + {(b)}^{2} \\ { {(h)}^{2} } = (20) {}^{2} + {(15)}^{2} \\ {(h)}^{2} = 400 + 225 \\ {(h)}^{2} = 625 \\ h \: = 25$