Question

A, B & C form a triangle where
∠
BAC = 90°.
AB = 2.7 mm and CA = 14 mm.
Find the length of BC, giving your answer rounded to 1 DP.

Answer 1

Answer:

$\bf \pink{Given}$

∠BAC = 90°

AB = 2.7 mm

CA = 14 mm

$\bf \red{Then \: by \: the \: pythagorus \: theorem:}$

${ab}^{2} + {ac}^{2} = {bc}^{2}$

${(2.7)}^{2} + {(14)}^{2} = {bc}^{2}$

$7.29 + 196 = {bc}^{2}$

${bc}^{2} = 203.29$

$bc = \sqrt{203.29}$

$bc = 14.2579802216</p><p></p><p></p><p>$