Mathematics: How to find the area of triangle?

How to find the area of triangle? - id13776765, leannaadrian

Ответ:

cabr379

17.06.2021

$(i). \\ { \tt{area = \frac{1}{2} \times base \times height}} \\ = \frac{1}{2} \times 4 \times 3 \\ = 6 \: sq \: units \\ \\ (iii). \\ = \frac{1}{2} \times 8 \times 6 \\ = 24 \: sq \: units \\ \\ (ii). \\ = \frac{1}{2} \times 12 \times 5 \\ = 30 \: sq \: units$

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Ответ:

jesicaagan

20.07.2022

Mathematics

725.71 cm

Step-by-step explanation:

Using the attached diagram :

Diameter of inner circle = 26

Radius of inner circle = 26/2 = 13

Radius of entire circle = 13 + 7 = 20

The Area of a circle = πr²

Area of inner circle = π13² = 169π

Area of entire circle = π20² = 400π

Area of shaded portion :

Area of entire circle - Area of inner circle

400π - 169π = 231π = 725.71 cm

Both circles have the same center. What is the area of the shaded region? r=10 m 7 m Use 3.14 for .

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