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3 years ago

Can someone help pls will mark Brainly and 10+ points

Mathematics

2 answers:

sleet_krkn [62]3 years ago

8 0

Answer:

I am not able to recognise what is there in that picture sry

tia_tia [17]3 years ago

3 0

Answer:

11) Perimeter = 61.6inches or 61.64inches

12) Perimeter = 71.2inches or 71.24inches.

Step-by-step explanation:

Shape 11; = square 11 x 14 = 140+14 = 154 area

Perimeter square side is just three sides

= 11 x 2 + 14 = 36 inches

Shape 11 triangle = b9^2 + 14^2 = sqrt 81+ sqrt 196 = sq rt 277 = 16.643317

So we use 9+ 16.643317 =25.643317

Perimeter = 25.6 + 36 = 61.6 inches

Shape 12; =

We have 20 and 16 so we square these and take away to find a^2

20^2 - 16^2 = sq rt 144 = 12 inches vertical top line

Then repeat for missing slant edge but add instead of subtract as its a slant line we are looking for

12^2 + 10^2 = 144 +100 = 244 sq rt = 2√ 61. = 15.62 inches

Perimeter therefore is 20+20 as they both sets are congruent shapes = 40

+ 15.62+15.62 = 31.24

31.24+40= 71.24 inches

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4 years ago

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Given:

• Upper Base of trapezoid = 8 cm

• Lower base = 20 cm

• Length of one leg (also height) = 5 cm

• Length of other leg = 13 cm

Let's find the area of the trapezoid.

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Where:

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b is the length of the lower base = 20 cm

h is the height = 5 cm

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1 year ago