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More help, pleaaaaase! Hahaha.

More help, pleaaaaase! Hahaha.-example-1

2 Answers

2 votes

Answer:

Ok. I'm just going to give you a hint on these, and then if you find it too hard,

then i'll walk you through.

Do you know the fomula for the angle of a triangle, A=(1/2)(b*h)?

If so, the idea behind these is to make triangles out of the sides of the diagrams, then add them to the squares in the middle.

Can you proceed?

User Bonnie Varghese
by
5.2k points
2 votes

Answer:

Explanation:

The shaded region is a trapezoid. The formula for determining the area of a trapezoid is expressed as

Area = 1/2(a + b)h

Where

a and b are the length of The bases are the 2 sides of the trapezoid which are parallel with one another.

h represents the height of the trapezoid.

5) From the information given,

a = 12

b = 24

h = 28

Area = 1/2(12 + 24)28 = 504 yd²

6) From the information given,

a = 21

b = 38

To determine h, we would apply the sine trigonometric ratio which is expressed as

Sin θ = opposite side/hypotenuse

Sin 30 = h/12

h = 12Sin30 = 12 × 0.5 = 6 cm

Area of trapezoid = 1/2(21 + 38)6 = 177 cm²

User FarmerBob
by
4.9k points
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