LGI Maths (WB 20.5.24) by

Lesson Slides

kayleighf — 2024-05-21 14:21:51 UTC

Questions

kayleighf — 2024-05-21 14:22:01 UTC

Six Circles

kayleighf — 2024-05-21 14:23:49 UTC

In the diagram, six circles of equal size touch adjacent circles and the sides of the large rectangle.

Each of the corners of the small rectangle is the centre of one of the large circles.

The perimeter of the small rectangle is 60cm.

What is the perimeter of the large rectangle?

Parts of a Circle

kayleighf — 2024-05-21 15:50:54 UTC

kayleighf — 2024-05-21 15:51:27 UTC

Lesson Slides

kayleighf — 2024-05-21 16:06:23 UTC

Circumference

kayleighf — 2024-05-21 16:40:06 UTC

Circumference is the name given to the distance around the boundary of a circle (very similar to perimeter).

It can be calculated in two ways:

C = π (3.14) x D
C = 2 x π x R

Use this understanding to calculate the circumference of the given circles.

Fluency Focus

kayleighf — 2024-05-21 17:29:55 UTC

Diagnostic Questions

kayleighf — 2024-05-21 17:30:14 UTC

Purposeful Practice

kayleighf — 2024-05-21 17:30:31 UTC

PQ Answers

kayleighf — 2024-05-21 17:31:24 UTC

32mm

40mm

FF Answers

kayleighf — 2024-05-21 17:32:56 UTC

DQ Answers

kayleighf — 2024-05-21 17:35:34 UTC

1) D because it is the only line that does not join the circumference to the centre of the circle.

2) A (no explanation needed).

3) A because the diameter of the red circle is half of 32cm (which is 6cm). The red circle's radius is then half of its diameter, giving us 8cm.

PP Answers

kayleighf — 2024-05-21 17:35:53 UTC

Faded Practice

kayleighf — 2024-05-21 17:37:11 UTC