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3 years ago

I need help please reply quickly higher gcse question

Mathematics

2 answers:

nexus9112 [7]3 years ago

5 0

Answer:

105 cm²

Step-by-step explanation:

The figure is composed of a rectangle and a triangle

area of rectangle = 15 × 6 = 90 cm²

area of triangle = $\frac{1}{2}$ bh ( b is the base and h the height )

Here b = 15 - 9 = 6 and h = 11 - 6 = 5 , thus

area of triangle = $\frac{1}{2}$ × 6 × 5 = 3 × 5 = 15 cm²

Total area = 90 + 15 = 105 cm²

Minchanka [31]3 years ago

4 0

Answer:

Step-by-step explanation:

see attached

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A rectangular garden is 8 metres longer than it is wide. if its area is 240m2 , how many metres is the width (ie. the shortest s

Snezhnost [94]

Area of a rectangle is length by width, width is x, length is x+8
x×(x+8)=240
x²+8x=240
x²+8x-240=0
Use the quadratic formula to solve
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x=\frac{-8±\sqrt{8^{2}-4(1)(-240)}}{2(1)}
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3 years ago

Someone, please help me with this question.

Viefleur [7K]

Answer:

C. 95°

Step-by-step explanation:

Sumplementary angles sum 180°

144° + a = 180°

a = 180° - 144°

a = 36°

121° + b = 180°

b = 180° - 121°

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a + b + c = 180°

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then:

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3 years ago