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Find the area of a circle whose measure is 13.7cm in diameter. Answer: One of the rectangular paintings in the museum has a length of 8 feet and width of 5 feet. What is its surface area? Answer: What is the area of a triangle having a base of 9 meters and an altitude of 4.5 meters? Answer:

kelangan ko lang po please ​

Sagot :

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Answer:

1. 147.41 cm^2

2. 40 ft^2

3. 20.25 m^2

Step-by-step explanation:

1.

[tex]r = 13.7 \div 2 = 6.85 \\ a = \pi {r}^{2} \\ = \pi ( {6.85})^{2} \\ = \pi46.9225 \\ = 147.41 {cm}^{2} \\ [/tex]

2.

A = LW

= (8)(5)

= 40 ft^2

3.

A= bh/2

= [(9)(4.5)]/2

=20.25 m^2

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