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2 years ago

20 points help help help

Mathematics

2 answers:

mrs_skeptik [129]2 years ago

7 0

The perimeter of the shape is 94 cm and the area is 462 sq cm.

Step-by-step explanation:

Given,

The radius (r) = 14 cm

To find the area and perimeter of the given shape.

The given shape is $\frac{3}{4}$ of the full circle.

Formula

The perimeter of the circle = 2πr

The perimeter of the given shape = $\frac{3}{4}$ (2πr)+r+r = $\frac{3}{4}$ (2πr)+2r

The area of the circle = πr²

Now,

The perimeter of the given shape = $\frac{3}{4}$ (2× $\frac{22}{7}$ ×14)+2×14 = 94 cm

The area of the given shape = $\frac{3}{4}$ (πr²)

= $\frac{3}{4}$ × $\frac{22}{7}$ ×14² = 462 sq cm

Sergeu [11.5K]2 years ago

3 0

Answer:

Area = 147pi cm²

Perimeter = (21pi + 28) cm

Step-by-step explanation:

Angle at the centre appear to be 270°

Area = (270/360) × pi × 14²

= 147pi cm²

Perimeter =

[(270/360) × 2 × pi × 14] + 14 + 14

(21pi + 28) cm

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Order the side from greatest to least. Η. 28° 118° K J side [Select ]

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Answer:

HJ>KJ>HK

Step-by-step explanation:

Side opposite to the largest angle is the largest.

Side opposite to smallest angle is the smallest.

ang K = 118° ang J = 28°

ang K + ang J + ang H = 180° (Sum of all the angles in the triangle is 180°)

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Smaller than ang K and bigger than ang J is ang H, so the side opposite to it i.e. KJ will be smaller than HJ but bigger than HK.

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HJ>KJ>HK.

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