The members of the Horticulture club are designing a wildflower garden. They want to make it in the shape of a triange whose sides have lenghts 12 feet, 14 feet, and 18 feet.
a. What is the measure of the largest angle in the triangle, to the nearest degree?
b. Using the answer in part a, find the area of the triangle to the nearest tenth of a square foot.
c. If one package of wildflower seeds covers 25 square feet, how many packages must they buy?
Please help!!!! Im soooooo confused!! please explain!! THank you sooo much!!!
Urgent Please Help!!!!!!?
a. Let a, b, c be the sides of lengths 12, 14, 18 feet, respectively.
By the cosine rule,
cos(C) = (a2+b2-c2)/(2ab)
= 0.0476
arccos(0.0476) = 87°
b. area = ?absin(C)
= ?(12)(14)(0.9987)
= 83.9 ft2
c. 83.9 ft2 × 1 package/25 ft2 = 3.4 packages
Four packages of seeds are needed.
Reply:idk what it is i suck at math
Reply:a. By drawing out the triangle, it creates a 90 degree angle where the 12ft and 14ft lines intersect.
b. So I took 12 X 14 and got 168 / 2 because a triangle is basically half of a rectangle or square. And I got 84 ft.
c. Divide 84 by 25, and it does not go in evenly, the answer would be 3, but since its not enough to cover the garden, you would need 4 packages.
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