Question

in this fig find the value of x​

Answer 1

Answer:

${p}^{2} + {b}^{2} = {h}^{2}$

Therefore,

(3cm)² + (x cm)² = (21 cm)²

=> (x cm)² = (21 cm)² - (3 cm)²

=> x cm = √441-9 cm²

=> x cm = √432 cm²

=> x cm = 20 cm ( approx ). ans....

Answer 2

Step-by-step explanation:

through Pythagoras formula

p²+b²+h²

b²=h²-p²

b²=12²-3²

b²=144-9

b²=135

b=√135

b=11.7approx