Rainfall is meastured in millimetres. One millimetre of rainfal je the amount of rain required to cover a flat surface to a depth of 1 mn IL is hard to measure small amounts of rainfall so Chnrlie makes. rain gauge by gluing pieces of clear plastic together in the shane triangular prism. The back, which is fixed to a post, is vertical and measures 10 cm by 20 cm. Each side is a vertical right-angled trianele The open top is a horizontal square. 10 ст 10 cm a How many millimetres of rainfall would it take to completely fill an empty rain gauge? b Starting with an empty gauge, what will be the height of water in the gauge after 4 mm of rain has fallen? c Charlie marks a rainfall scale on the vertical edge of his gauge. At what heights would the marks be for 20 mm, 40 mm, 60 mm, 80 mm, and 100 mm of rain? Give answers in centimetres rounded to one decimal place. d One day it rained consistently all afternoon. At 3 pm, Charlie noticed that the water level in the gauge was at the 20 mm mark. At 4 pm, the water level was exactly halfway between the 20 mm and 40 mm marks. To the nearest millimetre, how much rain had fallen in that hour? 20 сm

Q: The shaded area is (Round to two decimal p d.) ft. ?.

A: Here  Shaded Area = Area of square -Area of Circle And Length of square=28 Radius of circle =14

Q: 8. What is the perimeter, to the nearest tenth of a centimetre, of triangle LMN below? L N. 63 81,…

A: Given: NM=25cm and two angles are 63 & 81  Concept: Sum of all angles of traingle is 180° &…

Q: A 5cm Area = ст² Submit Question B 4cm E D C

A: Step 1:Step 2: Step 3: Step 4:

Q: re has 16-cm sides. Describe its image for a dilation with center at one 0.8.

A:

Q: 1. The radius of a sphere is 27 cm. Find its exact SA and Volume 1. SA = Vol =

A:

Q: Find the surface area of the regular pyramid as shown. 15 ft 10 ft 10 ft O 57.44 sq, ft O 212.13 sq.…

A: Find the area of the base triangle as it is an equilateral triangle.  And, for the rest surfaces,…

Q: Given: OP = 4 cm, AD = 1 cm, BC = 2 cm. Find the indicated values. Area of circle with radius OP is…

A:

Q: area of each face. 1. 8 ft 12 ft Steps: Surface area 1. Find the area of the faces • Top=_ Bottom=…

A: Area of a rectangle =( length× width)

Q: Find the surface area of the figure. Round to the nearest hundredth of a unit. Let a = 1, b = 2, and…

A: Surface area of rectangle is given as whose dimensions are l , b , h  Area = 2( lb + bh + hl )…

Q: 35.0 mm 26.0 mm 14.0 mm An oblique groove is cut in a block as shown. Before the groove was cut, the…

A: Concept used: The area of a rectangle is equal to the product of its length and width. A=l×w

Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.