Sam has sewn three square tablecloths of different sizes. He determines the length of the diagonal of each square tablecloth.
1 answer:
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Answer:
4.71
Step-by-step explanation:
The radius of the circle is 3 and the angle of the sector is 60°.
The area of a sector is given as:
where α = central angle of sector
r = radius of circle
Hence, the area of the sector is:
The area of the sector is 4.71
We have,
Introduce variable such that
The sum is therefore
So,
(sadia's age)
(father's age)
Hope this helps :)
Angles ∠ACD and ∠CAB are congruent because they are alternate angles. Then the area of the triangle AOB will be 22.53 square cm.
<h3>What is the area of the right-angle triangle?</h3>The area of the right-angle triangle is given as
A = 1/2 x B x H
Where B is the base and H is the height of the right triangle.
We know that angles ∠ACD and ∠CAB are congruent because they are alternate angles.
α₁ = 40°
AO = OC = 7.8 cm
Then the area of the triangle will be
Area = 1/2 x 7.8 x 7.8 x tan40°
Area = 22.53 square cm
More about the area of the right-angle triangle link is given below.
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