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Fittoniya [83]
3 years ago
15

Can someone's answer this​

Computers and Technology
1 answer:
madam [21]3 years ago
8 0

Answer:

See explanation

Explanation:

Required

The surface area of each shape

<u>Triangle</u>

Area = \frac{1}{2}bh

b\to base; h \to height

So:

Area = \frac{1}{2} * 23 * 21

Area = 241.5m^2

<u>Square</u>

Area = l^2

l \to length

So:

Area = 10^2

Area = 100m^2

<u>Rhombus</u>

<u></u>Area =a^2\sin(\theta)<u></u>

a \to side\ length

\theta \to any\ interior\ angle (not given)

So:

Area =18^2\sin(\theta)

Area =324\sin(\theta)

<u>Trapezium</u>

Area = \frac{1}{2}(a + b)*h

a,b \to parallel\ sides; h \to height

So:

Area = \frac{1}{2}(18 + 23)*21

Area = \frac{1}{2}*41*21

Area = 430.5m^2

<u>Circle</u>

Area = \frac{\pi d^2}{4}

d \to diameter

So:

Area = \frac{3.14 * 5^2}{4}

Area = \frac{3.14 * 25}{4}

Area = \frac{78.5}{4}

Area = 19.625m^2

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