Answer: perimeter = 96mm, Area = 564mm².
Step-by-step explanation:
From the diagram, it is a trapezium, it has a rectangle joined together by a right angled triangle. Now to find the perimeter, we add all the dimensions together. To get the other side of the rectangle, which is also the perpendicular height of the figure, we take the Pythagoras. Let the perpendicular height = x
Therefore,
25² = ײ + 7²
625 = x² + 49
x² = 625 - 49
x² = 576
x. = √576
= 24.
Now the perimeter
= 20 + 25 + 7 + 20 + 24
= 96mm.
Area of the figure will be
= 1/2( a + b )h
Where a = 20, b = 20 + 7 = 27 and h = 24, now substitute for the values
( 20 + 27) x 24
---------------------
2
= 47 x 24/2
= 47 x 12
= 564mm²
The problem asks how many guavas were eaten in total.
Answer:
Kitchen - 3.89 quarts or 3 quarts of latex enamel
Bathroom - 1.12 quarts or 1 quarts of latex enamel
Step-by-step explanation:
270 feet² for every 3 quartz.
We need how much ft² 1 quart can cover.
So,
270 ÷ 3 = 90 ft²
Every 1 quart covers about 90 ft² of wall.
For kitchen we need to cover 350 ft².
So,
350 ÷ 90 = 3.89 quarts or 3 quarts of latex enamel
For bathroom we need to cover 100 ft².
So,
100 ÷ 90 = 1.12 quarts or 1 quarts of latex enamel