Compound Shapes And Parts Of Shapes
Gbogbo ọrọ náà
Real objects are rarely a single neat rectangle or circle. An L-shaped room, a running track, a washer with a hole in it: these are compound shapes, built from simpler shapes joined together or cut apart. The good news is that you already know all the formulas you need. The skill is deciding how to split the shape and whether to add or subtract.
In this lesson you will find the area of compound shapes by splitting them into known shapes and adding the parts, and the area of shapes with a piece removed by subtracting. The same add-and-subtract thinking extends to compound solids and their volumes. Master the splitting strategy and even awkward-looking shapes become a short, tidy calculation.
Ebumnobi
- Carry out calculations and solve problems involving perimeters and areas of: compound shapes parts of shapes.
- Carry out calculations and solve problems involving surface areas and volumes of: compound solids parts of solids.
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Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Compound Shapes And Parts Of Shapes. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- An L-shape splits into a rectangle 8 cm by 2 cm and a rectangle 3 cm by 4 cm. What is its total area? A. 17 cm^2 B. 24 cm^2 C. 28 cm^2 D. 48 cm^2 Answer: C
- A circle of radius 3 cm is cut from a square of side 10 cm. Using pi = 3.142, what is the area remaining to 2 d.p.? A. 28.28 cm^2 B. 71.72 cm^2 C. 90.58 cm^2 D. 100.00 cm^2 Answer: B
- A compound solid is a cuboid 5 cm by 4 cm by 3 cm with a cuboid 2 cm by 2 cm by 3 cm on top. What is its volume? A. 60 cm^3 B. 72 cm^3 C. 84 cm^3 D. 120 cm^3 Answer: B
- What is the best first step when finding the area of a compound shape? A. Square the longest side B. Split it into simpler shapes you can calculate C. Multiply all the given lengths together D. Add up every length given Answer: B
- A washer is a circle of radius 5 cm with a circle of radius 2 cm removed from its centre. Using pi = 3.142, what is its area to 2 d.p.? A. 12.57 cm^2 B. 65.98 cm^2 C. 78.55 cm^2 D. 91.12 cm^2 Answer: B
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Akụkụ akwụkwọ
Solve Geometry Applications: Volume and Surface Area
Find volume and surface area of rectangular solids
"Prealgebra: Solve Geometry Applications: Volume and Surface Area" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/prealgebra/pages/9-6-solve-geometry-applications-volume-and-surface-area. Access for free at https://openstax.org/books/prealgebra/pages/1-introduction
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Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Compound Shapes And Parts Of Shapes? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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