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IgorC [24]
3 years ago
7

A rectangular piece of paper with length 34cm and width 16cm has two semicircles cut out of it. Find the area of the paper that

remains. Use the value 3.14 for PIE , and do not round your answer.
Mathematics
2 answers:
White raven [17]3 years ago
6 0
More information about the semi-circles needed. 

<span>But! 2 semi-circles make a whole circle, and the area for the circle follows the formula 2xpixr^2 </span>
<span>(that's two pi r squared) </span>

<span>Measure the radius, plug it into the formula, then you'll know the area o the two semi circles.. </span>
<span>Then you can subtract that from the area of the paper which is 34x16.</span>
PIT_PIT [208]3 years ago
5 0
Area = 3.14 × 8^2
= 200.96 cm^2

i am a mathematics teacher. if anything to ask please pm me
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The base of an isosceles right triangle is 30 cm. What is its area?
dlinn [17]

Answer:

A = 450 cm²

Step-by-step explanation:

Since the right triangle is isosceles then the 2 logs are congruent , both 30 cm and at right angles to each other.

The area (A ) of the triangle is calculated as

A = \frac{1}{2} bh ( b is the base and h the perpendicular height )

Here b = h = 30 , then

A = \frac{1}{2} × 30 × 30 = \frac{1}{2} × 900 = 450 cm²

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2 years ago
Mario was making cookies. He mixed 2½ cups of flour, 1¼ cups of sugar and ½ cup of brown sugar together in a bowl. How many cups
STatiana [176]

Answer:

4 1/4

Step-by-step explanation:

2 1/2 + 1 1/4 + 1/2 = 5/2 + 5/4 + 1/2

LCM = 4

5/2 x 2/2 = 10/4

5/4 = 5/4

1/2 x 2/2 = 2/4

10/4 + 5/4 + 2/4 = 17/4

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Therefore he put 4 1/4 cups altogether.

7 0
2 years ago
C) Parbati buys a mobile for Rs 6,300 and sells it to Laxmi at 15% profit. How much
Leni [432]

Answer:

Rs. 7245

Step-by-step explanation:

Given parameters:

Cost price  = Rs. 6300

Percentage profit  = 15%

Unknown:

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Solution:

If profit is made on a trade, the selling price is higher than the cost price.

 Profit  = Selling price  - Cost price

To find the selling price simply;

  Selling price  =( 1 + \frac{15}{100})  x cost price

  Selling price  = 1.15 x 6300  = Rs. 7245

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