Pls answer PLZZ ik it’s hard but pls

Claim: Area of triangle is 34 square feet

True

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Claim: Area of parallelogram is 56 square cm

False (it's actually 63 square cm)

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Claim: Area of trapezoid is 24 square inches

True

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Explanations:

To get the area of a triangle, multiply the base and height, then divide by 2

area of triangle = base*height/2

area of triangle = 10*6.8/2

area of triangle = 68/2

area of triangle = 34 square feet

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For a parallelogram, the area is simply base times height

area = base*height

area = 9*7

area = 63

It might help to rotate the figure so that the 9 cm side is completely horizontal.

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The trapezoid formula is a bit more tricky. We basically need to average the two parallel sides, then we follow the same basic path as the parallelogram route above.

The parallel sides are 9 and 7 inches which average to (9+7)/2 = 16/2 = 8. Note how 8 is directly between 7 and 9. Multiply the result 8 with the height 3 to get 8*3 = 24.

This is what it looks like when you use the trapezoid area formula

The 0.5 inch portion is never used.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

you'll just earn points here

step-by-step explanation: