# Examples for 8th grade - page 92

- Seagull

Artificially created island in the shape of a circle with a radius of 50 m is overgrown with grass. The only exception is a landing area for helicopters in the shape of a rectangle measuring 15 m and 8 m. What is the probability that the flying seagull (wi - Percents - easy

How many percent is 432 out of 434? - Satin

Sanusha buys a piece of satin 2.4 m wide. The diagonal length of the fabric is 4m. What is the length of the piece of satin? - Trapezium

The area of trapezium is 35 cm^{2.}Find its altitude if the bases are 6cm and 8 cm. - Inscribed circle

The circle inscribed in a triangle has a radius 3 cm. Express the area of the triangle using a, b, c. - Savings 2

Jozef and Michael saved 46 euros together. Michael saved 22 euros more than Jozef. How much did save each of them? - Cacao

Cacao contains 34% filling. How many grams of filling are in 130 g cacao. - Slope

Find the slope of the line: x=t and y=1+t. - Broken tree

The tree is broken at 4 meters above the ground and the top of the tree touches the ground at a distance of 5 from the trunk. Calculate the original height of the tree. - Bakery and flour

The bakery tray for flour was filled to 3/4 volume. After removing 875 kg of flour, it was filled to only 2/5 of the volume. How many tons of flour is in the full tray? - The rope

A 68 centimetre long rope is used to make a rhombus on the ground. The distance between a pair of opposite side corners is 16 centimetres what is the distance between the other two corners? - Classroom

There are eighty more girls in the class than boys. Boys are 40 percent and girls are 60 percent. How many are boys and how many girls? - Folded square

ABCD is a square. The square is folded on the midpoint of AB and A is folded onto the fold, creating a shaded region. The perimiter of the shaded figure is 75. Find the area of square ABCD - Trees

A young tree is 16 inches tall. One year later, it is 20 inches tall. What is the percent increase in height? - Mother and daughter

The mother is four times older than her daughter. Five years ago, her daughter was seven times younger than her mother. How many years do they have now? - Iron collecting

Class 7A collected 3.2 tonnes of iron more than class 7B. Together they collected 6.4 tonnes of iron to the secondary raw material collection. How much did each class collect? - Magic number

The number 135 split to two addends so that one addend was 30 greater than 2/5 the addend. - Storm

So far, a storm has traveled 35 miles in 1/2 hour in direction straight to observer. If it is currently 5:00 p. m. and the storm is 105 miles away from you, at what time will the storm reach you? Explain how you solved the problem. - Diagonals

A diagonal of a rhombus is 20 cm long. If it's one side is 26 cm find the length of the other diagonal. - Equation

Solve the equation: 1/2-2/8 = 1/10; Write the result as a decimal number.

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