Answer:
Step-by-step explanation:
Remark
This is a regular pentagon. The information given is enough the find the area of 1 triangle. There are 5 such triangles. So find the area of 1 of the triangles. The answer will be 5 times as much.
Givens
b = 18.3
h = 12.6
Formula
1 triangle = 1/2 * b * h
5 such triangles = 5 times as much
Solution
Area(1_triangle) = 1/2 * 18.3 * 12.6
Area (1_triangle) = 115.29
Answer: 5 * 115.29
Answer: 576.45
The correct answer is 50 + 10n . hope this helps!
Proper subset of a set is a subset of that is not equal to. all elements of are in but contains at least one element that is not it
example : if A = { 1,3,5} then B = {1,5} is a proper subset ofz
x= 1st integer and then x+1 x+2 and x+3 all add up to 326
x + x+1 + x+2 + x+3 = 326
4x +6 = 326
4x= 320 (divide both sides by 4)
x=80
the Second number is 81
Answer:
83422.5 grass seeds
Step-by-step explanation:
Applying,
A = 1/2bh....................... Equation 1
Where A = Area of the Triangle, b = base, h = height.
But, from the diagram,
tanФ = 20/b
b = 20/tanФ.................. Equation 2
Substitute equation 2 into equation 1
A = 1/2(20/tanФ)(h)................ Equation 3
Given: h = 20 m, Ф = 40°
Substitute these values into equation 3
A = 1/2(20×20)/tan40°
A = 200/tan40°
A = 238.35 m²
If the seed company recommends planting approximately 350 grass seeds per square meter,
Therefore,
Number of grass seed need = (350×238.35)
Number of grass seed needed = 83422.5 grass seeds