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PLS PLS HELP ME IM BEGGING YOU, PLEASE DONT ANSWER IF YOU DONT KNOW. THIS IS IMPORTANT PLEASE

PLS PLS HELP ME IM BEGGING YOU PLEASE DONT ANSWER IF YOU DONT KNOW THIS IS IMPORTANT PLEASE class=

Sagot :

Answer:

B = 12.8 cm (to 1.d.p)

D = 24.1 cm (to 1.d.p)

Step-by-step explanation:

Using Pythagoras Theorem:

B: 4^2 + 3.5^2 = 28.25

square root 28.25 = 5.3 (to 1 decimal place) so this is the length of the missing side.

To find perimeter add sides a, b and c so...

perimeter of triangle B = 12.8 cm (to 1 decimal place)

D: 10^2 - 6.5^2 = 57.75

square root 57.75 = 7.6 (to 1 decimal place) so this is the length of the missing side.

To find perimeter add sides a, b and c so...

perimeter of triangle D = 24.1 cm (to 1 decimal place)

^2 indicates squared

Sorry but I'm not too sure / confident about A or C